21120101220022 has 96 divisors (see below), whose sum is σ = 39350143526400. Its totient is φ = 8452075439808.

The previous prime is 21120101220017. The next prime is 21120101220067. The reversal of 21120101220022 is 22002210102112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21120101219978 and 21120101220005.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 86224228 + ... + 86468824.

It is an arithmetic number, because the mean of its divisors is an integer number (409897328400).

Almost surely, 2^{21120101220022} is an apocalyptic number.

21120101220022 is a deficient number, since it is larger than the sum of its proper divisors (18230042306378).

21120101220022 is a wasteful number, since it uses less digits than its factorization.

21120101220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245298 (or 245291 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21120101220022 its reverse (22002210102112), we get a palindrome (43122311322134).

The spelling of 21120101220022 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, two hundred twenty thousand, twenty-two".