21122122211202 has 16 divisors (see below), whose sum is σ = 42244404548832. Its totient is φ = 7040680716000.

The previous prime is 21122122211171. The next prime is 21122122211207. The reversal of 21122122211202 is 20211222122112.

It is a super-2 number, since 2×21122122211202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122122211207) by changing a digit.

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, 4921803 + ... + 8152814.

It is an arithmetic number, because the mean of its divisors is an integer number (2640275284302).

Almost surely, 2^{21122122211202} is an apocalyptic number.

21122122211202 is an abundant number, since it is smaller than the sum of its proper divisors (21122282337630).

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

21122122211202 is a wasteful number, since it uses less digits than its factorization.

21122122211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13343873.

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

Adding to 21122122211202 its reverse (20211222122112), we get a palindrome (41333344333314).

The spelling of 21122122211202 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, two hundred two".