21202111010120 has 32 divisors (see below), whose sum is σ = 50215526078400. Its totient is φ = 8034484171968.

The previous prime is 21202111010107. The next prime is 21202111010141. The reversal of 21202111010120 is 2101011120212.

It is a super-2 number, since 2×21202111010120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202111010095 and 21202111010104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13948756484 + ... + 13948758003.

It is an arithmetic number, because the mean of its divisors is an integer number (1569235189950).

Almost surely, 2^{21202111010120} is an apocalyptic number.

21202111010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202111010120 is an abundant number, since it is smaller than the sum of its proper divisors (29013415068280).

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

21202111010120 is a wasteful number, since it uses less digits than its factorization.

21202111010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27897514517 (or 27897514513 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21202111010120 its reverse (2101011120212), we get a palindrome (23303122130332).

The spelling of 21202111010120 in words is "twenty-one trillion, two hundred two billion, one hundred eleven million, ten thousand, one hundred twenty".