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102230322020 = 2255111516101
BaseRepresentation
bin101111100110101100…
…1101110101101100100
3100202212121101102212222
41133031121232231210
53133331430301040
6114544114331512
710246235254031
oct1371531565544
9322777342788
10102230322020
113a3a0396042
1217990889b98
1398428c9808
144d3b352388
1529d4e45bb5
hex17cd66eb64

102230322020 has 12 divisors (see below), whose sum is σ = 214683676284. Its totient is φ = 40892128800.

The previous prime is 102230321981. The next prime is 102230322023. The reversal of 102230322020 is 20223032201.

It can be written as a sum of positive squares in 2 ways, for example, as 49352399716 + 52877922304 = 222154^2 + 229952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102230322020.

It is not an unprimeable number, because it can be changed into a prime (102230322023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555758031 + ... + 2555758070.

It is an arithmetic number, because the mean of its divisors is an integer number (17890306357).

Almost surely, 2102230322020 is an apocalyptic number.

102230322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102230322020 is an abundant number, since it is smaller than the sum of its proper divisors (112453354264).

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

102230322020 is a wasteful number, since it uses less digits than its factorization.

102230322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111516110 (or 5111516108 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 102230322020 its reverse (20223032201), we get a palindrome (122453354221).

The spelling of 102230322020 in words is "one hundred two billion, two hundred thirty million, three hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 5111516101 10223032202 20446064404 25557580505 51115161010 102230322020