100102122120 has 1024 divisors, whose sum is σ = 420081500160. Its totient is φ = 18413568000.

The previous prime is 100102122047. The next prime is 100102122139. The reversal of 100102122120 is 21221201001.

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 = 100102122096 and 100102122105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 448888329 + ... + 448888551.

It is an arithmetic number, because the mean of its divisors is an integer number (410235840).

Almost surely, 2^100102122120 is an apocalyptic number.

100102122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100102122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210040750080).

100102122120 is an abundant number, since it is smaller than the sum of its proper divisors (319979378040).

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

100102122120 is a wasteful number, since it uses less digits than its factorization.

100102122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100102122120 its reverse (21221201001), we get a palindrome (121323323121).

It can be divided in two parts, 100102 and 122120, that added together give a palindrome (222222).

The spelling of 100102122120 in words is "one hundred billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty".