201021210212102 has 96 divisors (see below), whose sum is σ = 353773344117600. Its totient is φ = 85415446867968.

The previous prime is 201021210212099. The next prime is 201021210212143. The reversal of 201021210212102 is 201212012120102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8390905508 + ... + 8390929464.

It is an arithmetic number, because the mean of its divisors is an integer number (3685139001225).

Almost surely, 2^{201021210212102} is an apocalyptic number.

201021210212102 is a deficient number, since it is larger than the sum of its proper divisors (152752133905498).

201021210212102 is a wasteful number, since it uses less digits than its factorization.

201021210212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25558 (or 25551 counting only the distinct ones).

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

Adding to 201021210212102 its reverse (201212012120102), we get a palindrome (402233222332204).

The spelling of 201021210212102 in words is "two hundred one trillion, twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred two".