210121200011212 has 24 divisors (see below), whose sum is σ = 420279932345504. Its totient is φ = 90043900221312.

The previous prime is 210121200011207. The next prime is 210121200011213. The reversal of 210121200011212 is 212110002121012.

It is not an unprimeable number, because it can be changed into a prime (210121200011213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334790913 + ... + 335417944.

Almost surely, 2^{210121200011212} is an apocalyptic number.

It is an amenable number.

210121200011212 is an abundant number, since it is smaller than the sum of its proper divisors (210158732334292).

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

210121200011212 is a wasteful number, since it uses less digits than its factorization.

210121200011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670220065 (or 670220063 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210121200011212 its reverse (212110002121012), we get a palindrome (422231202132224).

The spelling of 210121200011212 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred million, eleven thousand, two hundred twelve".