121432311232000 has 80 divisors (see below), whose sum is σ = 302799057736032. Its totient is φ = 48572924467200.

The previous prime is 121432311231941. The next prime is 121432311232021. The reversal of 121432311232000 is 232113234121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×121432311232000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948625932 + ... + 948753931.

Almost surely, 2^{121432311232000} is an apocalyptic number.

121432311232000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121432311232000 is an abundant number, since it is smaller than the sum of its proper divisors (181366746504032).

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

121432311232000 is an frugal number, since it uses more digits than its factorization.

121432311232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897379896 (or 1897379870 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121432311232000 its reverse (232113234121), we get a palindrome (121664424466121).

The spelling of 121432311232000 in words is "one hundred twenty-one trillion, four hundred thirty-two billion, three hundred eleven million, two hundred thirty-two thousand".