121151520003025 has 24 divisors (see below), whose sum is σ = 153893298198528. Its totient is φ = 94556473680000.

The previous prime is 121151520003023. The next prime is 121151520003029. The reversal of 121151520003025 is 520300025151121.

It is a happy number.

It is not a de Polignac number, because 121151520003025 - 2¹ = 121151520003023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121151520002984 and 121151520003002.

It is not an unprimeable number, because it can be changed into a prime (121151520003023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137516680 + ... + 138394870.

It is an arithmetic number, because the mean of its divisors is an integer number (6412220758272).

Almost surely, 2^{121151520003025} is an apocalyptic number.

It is an amenable number.

121151520003025 is a deficient number, since it is larger than the sum of its proper divisors (32741778195503).

121151520003025 is a wasteful number, since it uses less digits than its factorization.

121151520003025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012833 (or 1012828 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 121151520003025 its reverse (520300025151121), we get a palindrome (641451545154146).

The spelling of 121151520003025 in words is "one hundred twenty-one trillion, one hundred fifty-one billion, five hundred twenty million, three thousand, twenty-five".