210121110102 has 8 divisors (see below), whose sum is σ = 420242220216. Its totient is φ = 70040370032.

The previous prime is 210121110079. The next prime is 210121110119. The reversal of 210121110102 is 201011121012.

It is a sphenic number, since it is the product of 3 distinct primes.

210121110102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17510092503 + ... + 17510092514.

It is an arithmetic number, because the mean of its divisors is an integer number (52530277527).

Almost surely, 2^210121110102 is an apocalyptic number.

210121110102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

210121110102 is a wasteful number, since it uses less digits than its factorization.

210121110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35020185022.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210121110102 its reverse (201011121012), we get a palindrome (411132231114).

The spelling of 210121110102 in words is "two hundred ten billion, one hundred twenty-one million, one hundred ten thousand, one hundred two".