121252011040 has 24 divisors (see below), whose sum is σ = 286457876460. Its totient is φ = 48500804352.

The previous prime is 121252011007. The next prime is 121252011047. The reversal of 121252011040 is 40110252121.

It can be written as a sum of positive squares in 2 ways, for example, as 99580638096 + 21671372944 = 315564^2 + 147212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121252010999 and 121252011017.

It is not an unprimeable number, because it can be changed into a prime (121252011047) 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, 378912375 + ... + 378912694.

Almost surely, 2^121252011040 is an apocalyptic number.

121252011040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121252011040 is an abundant number, since it is smaller than the sum of its proper divisors (165205865420).

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

121252011040 is an equidigital number, since it uses as much as digits as its factorization.

121252011040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757825084 (or 757825076 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 121252011040 its reverse (40110252121), we get a palindrome (161362263161).

The spelling of 121252011040 in words is "one hundred twenty-one billion, two hundred fifty-two million, eleven thousand, forty".