13201211121 has 32 divisors (see below), whose sum is σ = 20419577856. Its totient is φ = 7429968000.

The previous prime is 13201211071. The next prime is 13201211131. The reversal of 13201211121 is 12111210231.

It is not a de Polignac number, because 13201211121 - 2⁹ = 13201210609 is a prime.

It is a super-2 number, since 2×13201211121² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13201211121.

It is not an unprimeable number, because it can be changed into a prime (13201211131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742181 + ... + 1749741.

It is an arithmetic number, because the mean of its divisors is an integer number (638111808).

Almost surely, 2^13201211121 is an apocalyptic number.

It is an amenable number.

13201211121 is a deficient number, since it is larger than the sum of its proper divisors (7218366735).

13201211121 is a wasteful number, since it uses less digits than its factorization.

13201211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 13201211121 its reverse (12111210231), we get a palindrome (25312421352).

The spelling of 13201211121 in words is "thirteen billion, two hundred one million, two hundred eleven thousand, one hundred twenty-one".