121311231313000 has 64 divisors (see below), whose sum is σ = 283870899907920. Its totient is φ = 48524044896000.

The previous prime is 121311231312961. The next prime is 121311231313073. The reversal of 121311231313000 is 313132113121.

It can be written as a sum of positive squares in 8 ways, for example, as 5190477740644 + 116120753572356 = 2278262^2 + 10775934^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121122274 + ... + 122119726.

Almost surely, 2^{121311231313000} is an apocalyptic number.

121311231313000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121311231313000 is an abundant number, since it is smaller than the sum of its proper divisors (162559668594920).

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

121311231313000 is a wasteful number, since it uses less digits than its factorization.

121311231313000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119095 (or 1119081 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 121311231313000 its reverse (313132113121), we get a palindrome (121624363426121).

The spelling of 121311231313000 in words is "one hundred twenty-one trillion, three hundred eleven billion, two hundred thirty-one million, three hundred thirteen thousand".