202102100122 has 16 divisors (see below), whose sum is σ = 343655393760. Its totient is φ = 88368529392.

The previous prime is 202102100117. The next prime is 202102100129. The reversal of 202102100122 is 221001201202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (202102100129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204556288 + ... + 204557275.

It is an arithmetic number, because the mean of its divisors is an integer number (21478462110).

Almost surely, 2^202102100122 is an apocalyptic number.

202102100122 is a deficient number, since it is larger than the sum of its proper divisors (141553293638).

202102100122 is a wasteful number, since it uses less digits than its factorization.

202102100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409113597.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202102100122 its reverse (221001201202), we get a palindrome (423103301324).

The spelling of 202102100122 in words is "two hundred two billion, one hundred two million, one hundred thousand, one hundred twenty-two".