13211001999 has 24 divisors (see below), whose sum is σ = 20554384032. Its totient is φ = 8128290240.

The previous prime is 13211001961. The next prime is 13211002027. The reversal of 13211001999 is 99910011231.

It is not a de Polignac number, because 13211001999 - 2⁸ = 13211001743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211001299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1024009 + ... + 1036829.

It is an arithmetic number, because the mean of its divisors is an integer number (856432668).

Almost surely, 2^13211001999 is an apocalyptic number.

13211001999 is a deficient number, since it is larger than the sum of its proper divisors (7343382033).

13211001999 is a wasteful number, since it uses less digits than its factorization.

13211001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21647 (or 21644 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The spelling of 13211001999 in words is "thirteen billion, two hundred eleven million, one thousand, nine hundred ninety-nine".