102021100123100 has 36 divisors (see below), whose sum is σ = 223535163865104. Its totient is φ = 40412241598080.

The previous prime is 102021100123091. The next prime is 102021100123123. The reversal of 102021100123100 is 1321001120201.

It is a super-2 number, since 2×102021100123100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4952470289 + ... + 4952490888.

It is an arithmetic number, because the mean of its divisors is an integer number (6209310107364).

Almost surely, 2^{102021100123100} is an apocalyptic number.

102021100123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021100123100 is an abundant number, since it is smaller than the sum of its proper divisors (121514063742004).

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

102021100123100 is a wasteful number, since it uses less digits than its factorization.

102021100123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904961294 (or 9904961287 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 102021100123100 its reverse (1321001120201), we get a palindrome (103342101243301).

The spelling of 102021100123100 in words is "one hundred two trillion, twenty-one billion, one hundred million, one hundred twenty-three thousand, one hundred".