21120111110202 has 48 divisors (see below), whose sum is σ = 45976404426048. Its totient is φ = 6464824704000.

The previous prime is 21120111110179. The next prime is 21120111110237. The reversal of 21120111110202 is 20201111102112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53764174 + ... + 54155577.

It is an arithmetic number, because the mean of its divisors is an integer number (957841758876).

Almost surely, 2^{21120111110202} is an apocalyptic number.

21120111110202 is an abundant number, since it is smaller than the sum of its proper divisors (24856293315846).

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

21120111110202 is a wasteful number, since it uses less digits than its factorization.

21120111110202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107919975 (or 107919962 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21120111110202 its reverse (20201111102112), we get a palindrome (41321222212314).

The spelling of 21120111110202 in words is "twenty-one trillion, one hundred twenty billion, one hundred eleven million, one hundred ten thousand, two hundred two".