13001121232 has 20 divisors (see below), whose sum is σ = 27479642976. Its totient is φ = 5909600480.

The previous prime is 13001121209. The next prime is 13001121239. The reversal of 13001121232 is 23212110031.

It is a super-2 number, since 2×13001121232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001121239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36934828 + ... + 36935179.

Almost surely, 2^13001121232 is an apocalyptic number.

It is an amenable number.

13001121232 is an abundant number, since it is smaller than the sum of its proper divisors (14478521744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13001121232 is a wasteful number, since it uses less digits than its factorization.

13001121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73870026 (or 73870020 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13001121232 its reverse (23212110031), we get a palindrome (36213231263).

The spelling of 13001121232 in words is "thirteen billion, one million, one hundred twenty-one thousand, two hundred thirty-two".