121200025 has 6 divisors (see below), whose sum is σ = 150288062. Its totient is φ = 96960000.

The previous prime is 121200017. The next prime is 121200047. The reversal of 121200025 is 520002121.

It can be written as a sum of positive squares in 3 ways, for example, as 40487769 + 80712256 = 6363^2 + 8984^2 .

It is not a de Polignac number, because 121200025 - 2³ = 121200017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121199978 and 121200014.

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, 2423976 + ... + 2424025.

Almost surely, 2^121200025 is an apocalyptic number.

It is an amenable number.

121200025 is a deficient number, since it is larger than the sum of its proper divisors (29088037).

121200025 is an equidigital number, since it uses as much as digits as its factorization.

121200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848011 (or 4848006 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 121200025 is about 11009.0882910439. The cubic root of 121200025 is about 494.8811400497.

Adding to 121200025 its reverse (520002121), we get a palindrome (641202146).

The spelling of 121200025 in words is "one hundred twenty-one million, two hundred thousand, twenty-five".