121232414440 has 32 divisors (see below), whose sum is σ = 275837805000. Its totient is φ = 47948099584.

The previous prime is 121232414411. The next prime is 121232414461. The reversal of 121232414440 is 44414232121.

It can be written as a sum of positive squares in 4 ways, for example, as 51368409316 + 69864005124 = 226646^2 + 264318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121232414399 and 121232414408.

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, 17023465 + ... + 17030584.

Almost surely, 2^121232414440 is an apocalyptic number.

121232414440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121232414440 is an abundant number, since it is smaller than the sum of its proper divisors (154605390560).

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

121232414440 is a wasteful number, since it uses less digits than its factorization.

121232414440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34054149 (or 34054145 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 121232414440 its reverse (44414232121), we get a palindrome (165646646561).

The spelling of 121232414440 in words is "one hundred twenty-one billion, two hundred thirty-two million, four hundred fourteen thousand, four hundred forty".