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122122020 = 22353165657
BaseRepresentation
bin1110100011101…
…10111100100100
322111210102220210
413101312330210
5222230401040
620041255420
73012006606
oct721667444
9274712823
10122122020
1162a31099
1234a94570
131c3baa67
141230d176
15aac4480
hex7476f24

122122020 has 48 divisors (see below), whose sum is σ = 352977408. Its totient is φ = 31514880.

The previous prime is 122122001. The next prime is 122122037. The reversal of 122122020 is 20221221.

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 = 122121987 and 122122005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30969 + ... + 34688.

It is an arithmetic number, because the mean of its divisors is an integer number (7353696).

Almost surely, 2122122020 is an apocalyptic number.

122122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122122020 is an abundant number, since it is smaller than the sum of its proper divisors (230855388).

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

122122020 is a wasteful number, since it uses less digits than its factorization.

122122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65700 (or 65698 counting only the distinct ones).

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

The square root of 122122020 is about 11050.8832226207. The cubic root of 122122020 is about 496.1328609134.

Adding to 122122020 its reverse (20221221), we get a palindrome (142343241).

The spelling of 122122020 in words is "one hundred twenty-two million, one hundred twenty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 31 60 62 93 124 155 186 310 372 465 620 930 1860 65657 131314 196971 262628 328285 393942 656570 787884 984855 1313140 1969710 2035367 3939420 4070734 6106101 8141468 10176835 12212202 20353670 24424404 30530505 40707340 61061010 122122020