21112022202210 has 40 divisors (see below), whose sum is σ = 56767881923676. Its totient is φ = 5629872587040.

The previous prime is 21112022202209. The next prime is 21112022202241. The reversal of 21112022202210 is 1220222021112.

It is a happy number.

21112022202210 is a `hidden beast` number, since 21 + 1 + 1 + 202 + 220 + 221 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18667299201489 + 2444723000721 = 4320567^2 + 1563561^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13032111661 + ... + 13032113280.

Almost surely, 2^{21112022202210} is an apocalyptic number.

21112022202210 is an abundant number, since it is smaller than the sum of its proper divisors (35655859721466).

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

21112022202210 is a wasteful number, since it uses less digits than its factorization.

21112022202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26064224960 (or 26064224951 counting only the distinct ones).

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

Adding to 21112022202210 its reverse (1220222021112), we get a palindrome (22332244223322).

The spelling of 21112022202210 in words is "twenty-one trillion, one hundred twelve billion, twenty-two million, two hundred two thousand, two hundred ten".