121525435401 has 32 divisors (see below), whose sum is σ = 164011996800. Its totient is φ = 80035198464.

The previous prime is 121525435387. The next prime is 121525435417. The reversal of 121525435401 is 104534525121.

It is not a de Polignac number, because 121525435401 - 2¹⁰ = 121525434377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121525435481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94719106 + ... + 94720388.

It is an arithmetic number, because the mean of its divisors is an integer number (5125374900).

Almost surely, 2^121525435401 is an apocalyptic number.

It is an amenable number.

121525435401 is a deficient number, since it is larger than the sum of its proper divisors (42486561399).

121525435401 is a wasteful number, since it uses less digits than its factorization.

121525435401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 121525435401 in words is "one hundred twenty-one billion, five hundred twenty-five million, four hundred thirty-five thousand, four hundred one".