13010501021 has 6 divisors (see below), whose sum is σ = 15134664510. Its totient is φ = 11151857976.

The previous prime is 13010500991. The next prime is 13010501027. The reversal of 13010501021 is 12010501031.

It can be written as a sum of positive squares in only one way, i.e., 6644695225 + 6365805796 = 81515^2 + 79786^2 .

It is not a de Polignac number, because 13010501021 - 2²² = 13006306717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13010500987 and 13010501005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13010501027) 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, 132760166 + ... + 132760263.

It is an arithmetic number, because the mean of its divisors is an integer number (2522444085).

Almost surely, 2^13010501021 is an apocalyptic number.

It is an amenable number.

13010501021 is a deficient number, since it is larger than the sum of its proper divisors (2124163489).

13010501021 is an equidigital number, since it uses as much as digits as its factorization.

13010501021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265520443 (or 265520436 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The spelling of 13010501021 in words is "thirteen billion, ten million, five hundred one thousand, twenty-one".