21122122112202 has 16 divisors (see below), whose sum is σ = 44729199767232. Its totient is φ = 6626548113600.

The previous prime is 21122122112183. The next prime is 21122122112249. The reversal of 21122122112202 is 20221122122112.

It is a super-2 number, since 2×21122122112202² (a number of 27 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 103539814174 + ... + 103539814377.

It is an arithmetic number, because the mean of its divisors is an integer number (2795574985452).

Almost surely, 2^{21122122112202} is an apocalyptic number.

21122122112202 is an abundant number, since it is smaller than the sum of its proper divisors (23607077655030).

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

21122122112202 is a wasteful number, since it uses less digits than its factorization.

21122122112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207079628573.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21122122112202 its reverse (20221122122112), we get a palindrome (41343244234314).

It can be divided in two parts, 21122122112 and 202, that multiplied together give a palindrome (4266668666624).

The spelling of 21122122112202 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twelve thousand, two hundred two".