21122011212202 has 64 divisors (see below), whose sum is σ = 33646868640000. Its totient is φ = 9924570551808.

The previous prime is 21122011212199. The next prime is 21122011212221. The reversal of 21122011212202 is 20221211022112.

It is a super-2 number, since 2×21122011212202² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122011212202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313195878 + ... + 313263310.

It is an arithmetic number, because the mean of its divisors is an integer number (525732322500).

Almost surely, 2^{21122011212202} is an apocalyptic number.

21122011212202 is a deficient number, since it is larger than the sum of its proper divisors (12524857427798).

21122011212202 is a wasteful number, since it uses less digits than its factorization.

21122011212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68095.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21122011212202 its reverse (20221211022112), we get a palindrome (41343222234314).

The spelling of 21122011212202 in words is "twenty-one trillion, one hundred twenty-two billion, eleven million, two hundred twelve thousand, two hundred two".