201021222012102 has 48 divisors (see below), whose sum is σ = 439296905331648. Its totient is φ = 66432378608640.

The previous prime is 201021222012097. The next prime is 201021222012109. The reversal of 201021222012102 is 201210222120102.

It is a happy number.

201021222012102 is a `hidden beast` number, since 20 + 1 + 0 + 212 + 220 + 1 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021222012109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97726974 + ... + 99762737.

It is an arithmetic number, because the mean of its divisors is an integer number (9152018861076).

Almost surely, 2^{201021222012102} is an apocalyptic number.

201021222012102 is an abundant number, since it is smaller than the sum of its proper divisors (238275683319546).

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

201021222012102 is a wasteful number, since it uses less digits than its factorization.

201021222012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197490205 (or 197490202 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201021222012102 its reverse (201210222120102), we get a palindrome (402231444132204).

The spelling of 201021222012102 in words is "two hundred one trillion, twenty-one billion, two hundred twenty-two million, twelve thousand, one hundred two".