21202211211102 has 24 divisors (see below), whose sum is σ = 45948183177936. Its totient is φ = 7065856215936.

The previous prime is 21202211211019. The next prime is 21202211211119. The reversal of 21202211211102 is 20111211220212.

21202211211102 is a `hidden beast` number, since 212 + 0 + 221 + 121 + 110 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128875603 + ... + 129040014.

It is an arithmetic number, because the mean of its divisors is an integer number (1914507632414).

Almost surely, 2^{21202211211102} is an apocalyptic number.

21202211211102 is an abundant number, since it is smaller than the sum of its proper divisors (24745971966834).

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

21202211211102 is a wasteful number, since it uses less digits than its factorization.

21202211211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257920192 (or 257920189 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21202211211102 its reverse (20111211220212), we get a palindrome (41313422431314).

The spelling of 21202211211102 in words is "twenty-one trillion, two hundred two billion, two hundred eleven million, two hundred eleven thousand, one hundred two".