13000011021 has 12 divisors (see below), whose sum is σ = 18779096700. Its totient is φ = 8666072640.

The previous prime is 13000011019. The next prime is 13000011029. The reversal of 13000011021 is 12011000031.

13000011021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8202924900 + 4797086121 = 90570^2 + 69261^2 .

It is not a de Polignac number, because 13000011021 - 2¹ = 13000011019 is a prime.

It is a super-2 number, since 2×13000011021² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 13000010994 and 13000011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000011029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115651 + ... + 198431.

It is an arithmetic number, because the mean of its divisors is an integer number (1564924725).

Almost surely, 2^13000011021 is an apocalyptic number.

It is an amenable number.

13000011021 is a deficient number, since it is larger than the sum of its proper divisors (5779085679).

13000011021 is a wasteful number, since it uses less digits than its factorization.

13000011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100236 (or 100233 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 13000011021 its reverse (12011000031), we get a palindrome (25011011052).

The spelling of 13000011021 in words is "thirteen billion, eleven thousand, twenty-one".