201020202112122 has 48 divisors (see below), whose sum is σ = 438378560182368. Its totient is φ = 66570917994720.

The previous prime is 201020202112043. The next prime is 201020202112127. The reversal of 201020202112122 is 221211202020102.

It is a happy number.

201020202112122 is a `hidden beast` number, since 201 + 0 + 20 + 20 + 211 + 212 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 201020202112095 and 201020202112104.

It is not an unprimeable number, because it can be changed into a prime (201020202112127) 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, 4819504 + ... + 20622027.

It is an arithmetic number, because the mean of its divisors is an integer number (9132886670466).

Almost surely, 2^{201020202112122} is an apocalyptic number.

201020202112122 is an abundant number, since it is smaller than the sum of its proper divisors (237358358070246).

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

201020202112122 is a wasteful number, since it uses less digits than its factorization.

201020202112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25444395 (or 25444392 counting only the distinct ones).

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

Adding to 201020202112122 its reverse (221211202020102), we get a palindrome (422231404132224).

The spelling of 201020202112122 in words is "two hundred one trillion, twenty billion, two hundred two million, one hundred twelve thousand, one hundred twenty-two".