21020210020113 has 64 divisors (see below), whose sum is σ = 29174160863232. Its totient is φ = 13453004597760.

The previous prime is 21020210020087. The next prime is 21020210020129. The reversal of 21020210020113 is 31102001202012.

It is not a de Polignac number, because 21020210020113 - 2⁵ = 21020210020081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21020210020092 and 21020210020101.

It is not an unprimeable number, because it can be changed into a prime (21020210020813) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1768330056 + ... + 1768341942.

It is an arithmetic number, because the mean of its divisors is an integer number (455846263488).

Almost surely, 2^{21020210020113} is an apocalyptic number.

It is an amenable number.

21020210020113 is a deficient number, since it is larger than the sum of its proper divisors (8153950843119).

21020210020113 is a wasteful number, since it uses less digits than its factorization.

21020210020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12854.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21020210020113 its reverse (31102001202012), we get a palindrome (52122211222125).

The spelling of 21020210020113 in words is "twenty-one trillion, twenty billion, two hundred ten million, twenty thousand, one hundred thirteen".