21020020030113 has 16 divisors (see below), whose sum is σ = 30382477593216. Its totient is φ = 12849732057600.

The previous prime is 21020020030039. The next prime is 21020020030193. The reversal of 21020020030113 is 31103002002012.

It is not a de Polignac number, because 21020020030113 - 2⁸ = 21020020029857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21020020030092 and 21020020030101.

It is not an unprimeable number, because it can be changed into a prime (21020020030193) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1784679120 + ... + 1784690897.

It is an arithmetic number, because the mean of its divisors is an integer number (1898904849576).

Almost surely, 2^{21020020030113} is an apocalyptic number.

It is an amenable number.

21020020030113 is a deficient number, since it is larger than the sum of its proper divisors (9362457563103).

21020020030113 is a wasteful number, since it uses less digits than its factorization.

21020020030113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569370184.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21020020030113 its reverse (31103002002012), we get a palindrome (52123022032125).

The spelling of 21020020030113 in words is "twenty-one trillion, twenty billion, twenty million, thirty thousand, one hundred thirteen".