121345525 has 12 divisors (see below), whose sum is σ = 171964192. Its totient is φ = 83208240.

The previous prime is 121345519. The next prime is 121345559. The reversal of 121345525 is 525543121.

It is not a de Polignac number, because 121345525 - 2³ = 121345517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121345493 and 121345502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346527 + ... + 346876.

Almost surely, 2^121345525 is an apocalyptic number.

It is an amenable number.

121345525 is a deficient number, since it is larger than the sum of its proper divisors (50618667).

121345525 is an equidigital number, since it uses as much as digits as its factorization.

121345525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693420 (or 693415 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 121345525 is about 11015.6944855964. The cubic root of 121345525 is about 495.0790949350.

Adding to 121345525 its reverse (525543121), we get a palindrome (646888646).

The spelling of 121345525 in words is "one hundred twenty-one million, three hundred forty-five thousand, five hundred twenty-five".