121081412425 has 54 divisors (see below), whose sum is σ = 160686112938. Its totient is φ = 90489047040.

The previous prime is 121081412399. The next prime is 121081412429. The reversal of 121081412425 is 524214180121.

It can be written as a sum of positive squares in 9 ways, for example, as 14933817616 + 106147594809 = 122204^2 + 325803^2 .

It is not a de Polignac number, because 121081412425 - 2¹¹ = 121081410377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121081412429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 359291857 + ... + 359292193.

Almost surely, 2^121081412425 is an apocalyptic number.

It is an amenable number.

121081412425 is a deficient number, since it is larger than the sum of its proper divisors (39604700513).

121081412425 is an equidigital number, since it uses as much as digits as its factorization.

121081412425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

Adding to 121081412425 its reverse (524214180121), we get a palindrome (645295592546).

The spelling of 121081412425 in words is "one hundred twenty-one billion, eighty-one million, four hundred twelve thousand, four hundred twenty-five".