21202200120120 has 128 divisors (see below), whose sum is σ = 70892805484800. Its totient is φ = 5041266149376.

The previous prime is 21202200120119. The next prime is 21202200120223. The reversal of 21202200120120 is 2102100220212.

21202200120120 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21202200120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273467434 + ... + 273544953.

It is an arithmetic number, because the mean of its divisors is an integer number (553850042850).

Almost surely, 2^{21202200120120} is an apocalyptic number.

21202200120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202200120120 is an abundant number, since it is smaller than the sum of its proper divisors (49690605364680).

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

21202200120120 is a wasteful number, since it uses less digits than its factorization.

21202200120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547012437 (or 547012433 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21202200120120 its reverse (2102100220212), we get a palindrome (23304300340332).

The spelling of 21202200120120 in words is "twenty-one trillion, two hundred two billion, two hundred million, one hundred twenty thousand, one hundred twenty".