121200925 has 6 divisors (see below), whose sum is σ = 150289178. Its totient is φ = 96960720.

The previous prime is 121200907. The next prime is 121200941. The reversal of 121200925 is 529002121.

It can be written as a sum of positive squares in 3 ways, for example, as 8543929 + 112656996 = 2923^2 + 10614^2 .

It is not a de Polignac number, because 121200925 - 2⁹ = 121200413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121200896 and 121200905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2423994 + ... + 2424043.

Almost surely, 2^121200925 is an apocalyptic number.

It is an amenable number.

121200925 is a deficient number, since it is larger than the sum of its proper divisors (29088253).

121200925 is an equidigital number, since it uses as much as digits as its factorization.

121200925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848047 (or 4848042 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 121200925 is about 11009.1291662874. The cubic root of 121200925 is about 494.8823649998.

The spelling of 121200925 in words is "one hundred twenty-one million, two hundred thousand, nine hundred twenty-five".