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102010222020 = 22357242881481
BaseRepresentation
bin101111100000001001…
…0000111010111000100
3100202022021020012110010
41133000102013113010
53132404104101040
6114510213030220
710240623403050
oct1370022072704
9322267205403
10102010222020
113a298124713
121792b025370
139809125725
144d1a01ac60
1529c096ae80
hex17c04875c4

102010222020 has 48 divisors (see below), whose sum is σ = 326432711808. Its totient is φ = 23316622080.

The previous prime is 102010222003. The next prime is 102010222021. The reversal of 102010222020 is 20222010201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102010221987 and 102010222005.

It is not an unprimeable number, because it can be changed into a prime (102010222021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121440321 + ... + 121441160.

It is an arithmetic number, because the mean of its divisors is an integer number (6800681496).

Almost surely, 2102010222020 is an apocalyptic number.

102010222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102010222020 is an abundant number, since it is smaller than the sum of its proper divisors (224422489788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102010222020 is a wasteful number, since it uses less digits than its factorization.

102010222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242881500 (or 242881498 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 102010222020 its reverse (20222010201), we get a palindrome (122232232221).

The spelling of 102010222020 in words is "one hundred two billion, ten million, two hundred twenty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 242881481 485762962 728644443 971525924 1214407405 1457288886 1700170367 2428814810 2914577772 3400340734 3643222215 4857629620 5100511101 6800681468 7286444430 8500851835 10201022202 14572888860 17001703670 20402044404 25502555505 34003407340 51005111010 102010222020