21020301113 has 6 divisors (see below), whose sum is σ = 24452187066. Its totient is φ = 18017400912.

The previous prime is 21020301097. The next prime is 21020301121. The reversal of 21020301113 is 31110302012.

It can be written as a sum of positive squares in only one way, i.e., 18921928249 + 2098372864 = 137557^2 + 45808^2 .

It is not a de Polignac number, because 21020301113 - 2⁴ = 21020301097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020301143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214492820 + ... + 214492917.

It is an arithmetic number, because the mean of its divisors is an integer number (4075364511).

Almost surely, 2^21020301113 is an apocalyptic number.

It is an amenable number.

21020301113 is a deficient number, since it is larger than the sum of its proper divisors (3431885953).

21020301113 is an equidigital number, since it uses as much as digits as its factorization.

21020301113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428985751 (or 428985744 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21020301113 its reverse (31110302012), we get a palindrome (52130603125).

The spelling of 21020301113 in words is "twenty-one billion, twenty million, three hundred one thousand, one hundred thirteen".