13021011 has 6 divisors (see below), whose sum is σ = 18808140. Its totient is φ = 8680668.

The previous prime is 13021009. The next prime is 13021027. The reversal of 13021011 is 11012031.

It is not a de Polignac number, because 13021011 - 2¹ = 13021009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1446779 = 13021011 / (1 + 3 + 0 + 2 + 1 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 13020984 and 13021002.

It is not an unprimeable number, because it can be changed into a prime (13021051) 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, 723381 + ... + 723398.

It is an arithmetic number, because the mean of its divisors is an integer number (3134690).

Almost surely, 2^13021011 is an apocalyptic number.

13021011 is a deficient number, since it is larger than the sum of its proper divisors (5787129).

13021011 is a wasteful number, since it uses less digits than its factorization.

13021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446785 (or 1446782 counting only the distinct ones).

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

The square root of 13021011 is about 3608.4638005667. The cubic root of 13021011 is about 235.2600772361.

Adding to 13021011 its reverse (11012031), we get a palindrome (24033042).

The spelling of 13021011 in words is "thirteen million, twenty-one thousand, eleven".