210121020212012 has 48 divisors (see below), whose sum is σ = 452569911877440. Its totient is φ = 83124512554752.

The previous prime is 210121020212009. The next prime is 210121020212023. The reversal of 210121020212012 is 210212020121012.

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 15 ways as a sum of consecutive naturals, for example, 127438814 + ... + 129077082.

It is an arithmetic number, because the mean of its divisors is an integer number (9428539830780).

Almost surely, 2^{210121020212012} is an apocalyptic number.

It is an amenable number.

210121020212012 is an abundant number, since it is smaller than the sum of its proper divisors (242448891665428).

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

210121020212012 is a wasteful number, since it uses less digits than its factorization.

210121020212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990650 (or 1990648 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210121020212012 its reverse (210212020121012), we get a palindrome (420333040333024).

The spelling of 210121020212012 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty million, two hundred twelve thousand, twelve".