121204941025 has 81 divisors (see below), whose sum is σ = 181597952601. Its totient is φ = 80246029920.

The previous prime is 121204941023. The next prime is 121204941049. The reversal of 121204941025 is 520149402121.

The square root of 121204941025 is 348145.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1666027489 + 119538913536 = 40817^2 + 345744^2 .

It is not a de Polignac number, because 121204941025 - 2¹ = 121204941023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121204941023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 4179480711 + ... + 4179480739.

Almost surely, 2^121204941025 is an apocalyptic number.

121204941025 is the 348145-th square number.

121204941025 is the 174073-rd centered octagonal number.

It is an amenable number.

121204941025 is a deficient number, since it is larger than the sum of its proper divisors (60393011576).

121204941025 is an frugal number, since it uses more digits than its factorization.

121204941025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 121204941025 in words is "one hundred twenty-one billion, two hundred four million, nine hundred forty-one thousand, twenty-five".