13121010121232 has 20 divisors (see below), whose sum is σ = 27377492272620. Its totient is φ = 6055850825088.

The previous prime is 13121010121231. The next prime is 13121010121283. The reversal of 13121010121232 is 23212101012131.

It can be written as a sum of positive squares in 2 ways, for example, as 2319638657296 + 10801371463936 = 1523036^2 + 3286544^2 .

It is not an unprimeable number, because it can be changed into a prime (13121010121231) 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, 31540889507 + ... + 31540889922.

It is an arithmetic number, because the mean of its divisors is an integer number (1368874613631).

Almost surely, 2^{13121010121232} is an apocalyptic number.

It is an amenable number.

13121010121232 is an abundant number, since it is smaller than the sum of its proper divisors (14256482151388).

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

13121010121232 is a wasteful number, since it uses less digits than its factorization.

13121010121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63081779450 (or 63081779444 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13121010121232 its reverse (23212101012131), we get a palindrome (36333111133363).

The spelling of 13121010121232 in words is "thirteen trillion, one hundred twenty-one billion, ten million, one hundred twenty-one thousand, two hundred thirty-two".