21110020313 has 8 divisors (see below), whose sum is σ = 21386494080. Its totient is φ = 20833778160.

The previous prime is 21110020303. The next prime is 21110020339. The reversal of 21110020313 is 31302001112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21110020313 - 2⁴ = 21110020297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110020303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129518 + ... + 242888.

It is an arithmetic number, because the mean of its divisors is an integer number (2673311760).

Almost surely, 2^21110020313 is an apocalyptic number.

It is an amenable number.

21110020313 is a deficient number, since it is larger than the sum of its proper divisors (276473767).

21110020313 is a wasteful number, since it uses less digits than its factorization.

21110020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115807.

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

Adding to 21110020313 its reverse (31302001112), we get a palindrome (52412021425).

The spelling of 21110020313 in words is "twenty-one billion, one hundred ten million, twenty thousand, three hundred thirteen".