13121232232 has 8 divisors (see below), whose sum is σ = 24602310450. Its totient is φ = 6560616112.

The previous prime is 13121232221. The next prime is 13121232233. The reversal of 13121232232 is 23223212131.

It can be written as a sum of positive squares in only one way, i.e., 10321340836 + 2799891396 = 101594^2 + 52914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13121232233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820077007 + ... + 820077022.

Almost surely, 2^13121232232 is an apocalyptic number.

It is an amenable number.

13121232232 is a deficient number, since it is larger than the sum of its proper divisors (11481078218).

13121232232 is a wasteful number, since it uses less digits than its factorization.

13121232232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640154035 (or 1640154031 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 13121232232 its reverse (23223212131), we get a palindrome (36344444363).

The spelling of 13121232232 in words is "thirteen billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred thirty-two".