201210112122222 has 32 divisors (see below), whose sum is σ = 486962288163072. Its totient is φ = 54106920906624.

The previous prime is 201210112122203. The next prime is 201210112122233. The reversal of 201210112122222 is 222221211012102.

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 15 ways as a sum of consecutive naturals, for example, 140903439148 + ... + 140903440575.

It is an arithmetic number, because the mean of its divisors is an integer number (15217571505096).

Almost surely, 2^{201210112122222} is an apocalyptic number.

201210112122222 is an abundant number, since it is smaller than the sum of its proper divisors (285752176040850).

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

201210112122222 is a wasteful number, since it uses less digits than its factorization.

201210112122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281806879752.

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

Adding to 201210112122222 its reverse (222221211012102), we get a palindrome (423431323134324).

The spelling of 201210112122222 in words is "two hundred one trillion, two hundred ten billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-two".