202101100122 has 32 divisors (see below), whose sum is σ = 405053288640. Its totient is φ = 67225271040.

The previous prime is 202101100121. The next prime is 202101100141. The reversal of 202101100122 is 221001101202.

It is a junction number, because it is equal to n+sod(n) for n = 202101100098 and 202101100107.

It is not an unprimeable number, because it can be changed into a prime (202101100121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11547154 + ... + 11564642.

It is an arithmetic number, because the mean of its divisors is an integer number (12657915270).

Almost surely, 2^202101100122 is an apocalyptic number.

202101100122 is an abundant number, since it is smaller than the sum of its proper divisors (202952188518).

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

202101100122 is a wasteful number, since it uses less digits than its factorization.

202101100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21438.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202101100122 its reverse (221001101202), we get a palindrome (423102201324).

The spelling of 202101100122 in words is "two hundred two billion, one hundred one million, one hundred thousand, one hundred twenty-two".