21202102111120 has 40 divisors (see below), whose sum is σ = 56337014182464. Its totient is φ = 7269292152192.

The previous prime is 21202102111097. The next prime is 21202102111187. The reversal of 21202102111120 is 2111120120212.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 21202102111094 and 21202102111103.

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, 18930447754 + ... + 18930448873.

Almost surely, 2^{21202102111120} is an apocalyptic number.

21202102111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202102111120 is an abundant number, since it is smaller than the sum of its proper divisors (35134912071344).

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

21202102111120 is a wasteful number, since it uses less digits than its factorization.

21202102111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37860896647 (or 37860896641 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21202102111120 its reverse (2111120120212), we get a palindrome (23313222231332).

The spelling of 21202102111120 in words is "twenty-one trillion, two hundred two billion, one hundred two million, one hundred eleven thousand, one hundred twenty".