201212122122102 has 64 divisors (see below), whose sum is σ = 511268518785024. Its totient is φ = 51355096744320.

The previous prime is 201212122122091. The next prime is 201212122122131. The reversal of 201212122122102 is 201221221212102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5943860013 + ... + 5943893864.

It is an arithmetic number, because the mean of its divisors is an integer number (7988570606016).

Almost surely, 2^{201212122122102} is an apocalyptic number.

201212122122102 is an abundant number, since it is smaller than the sum of its proper divisors (310056396662922).

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

201212122122102 is a wasteful number, since it uses less digits than its factorization.

201212122122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11887753933.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201212122122102 its reverse (201221221212102), we get a palindrome (402433343334204).

The spelling of 201212122122102 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred two".