13011222021 has 16 divisors (see below), whose sum is σ = 20870131200. Its totient is φ = 7043668848.

The previous prime is 13011221987. The next prime is 13011222043. The reversal of 13011222021 is 12022211031.

13011222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13011222021 - 2¹⁷ = 13011090949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011222421) 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 15 ways as a sum of consecutive naturals, for example, 16304391 + ... + 16305188.

It is an arithmetic number, because the mean of its divisors is an integer number (1304383200).

Almost surely, 2^13011222021 is an apocalyptic number.

It is an amenable number.

13011222021 is a deficient number, since it is larger than the sum of its proper divisors (7858909179).

13011222021 is a wasteful number, since it uses less digits than its factorization.

13011222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32609608.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13011222021 its reverse (12022211031), we get a palindrome (25033433052).

The spelling of 13011222021 in words is "thirteen billion, eleven million, two hundred twenty-two thousand, twenty-one".