210012102121100 has 72 divisors (see below), whose sum is σ = 456115979708928. Its totient is φ = 83933034292800.

The previous prime is 210012102121069. The next prime is 210012102121139. The reversal of 210012102121100 is 1121201210012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550520627 + ... + 550901973.

It is an arithmetic number, because the mean of its divisors is an integer number (6334944162624).

Almost surely, 2^{210012102121100} is an apocalyptic number.

210012102121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210012102121100 is an abundant number, since it is smaller than the sum of its proper divisors (246103877587828).

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

210012102121100 is a wasteful number, since it uses less digits than its factorization.

210012102121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386055 (or 386048 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210012102121100 its reverse (1121201210012), we get a palindrome (211133303331112).

The spelling of 210012102121100 in words is "two hundred ten trillion, twelve billion, one hundred two million, one hundred twenty-one thousand, one hundred".