21200120267088 has 160 divisors (see below), whose sum is σ = 66276156911616. Its totient is φ = 5700570568704.

The previous prime is 21200120267087. The next prime is 21200120267099. The reversal of 21200120267088 is 88076202100212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200120267087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120681045 + ... + 120856587.

Almost surely, 2^{21200120267088} is an apocalyptic number.

21200120267088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21200120267088 is an abundant number, since it is smaller than the sum of its proper divisors (45076036644528).

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

21200120267088 is a wasteful number, since it uses less digits than its factorization.

21200120267088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196721 (or 196715 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 21200120267088 in words is "twenty-one trillion, two hundred billion, one hundred twenty million, two hundred sixty-seven thousand, eighty-eight".