121244031432 has 96 divisors (see below), whose sum is σ = 332212023000. Its totient is φ = 39942144000.

The previous prime is 121244031373. The next prime is 121244031449. The reversal of 121244031432 is 234130442121.

121244031432 is a `hidden beast` number, since 1 + 212 + 4 + 403 + 1 + 43 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18353204676 + 102890826756 = 135474^2 + 320766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121244031396 and 121244031405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25636044 + ... + 25640772.

Almost surely, 2^121244031432 is an apocalyptic number.

121244031432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121244031432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166106011500).

121244031432 is an abundant number, since it is smaller than the sum of its proper divisors (210967991568).

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

121244031432 is a wasteful number, since it uses less digits than its factorization.

121244031432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8831 (or 8824 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 121244031432 its reverse (234130442121), we get a palindrome (355374473553).

The spelling of 121244031432 in words is "one hundred twenty-one billion, two hundred forty-four million, thirty-one thousand, four hundred thirty-two".