121252477 has 4 divisors (see below), whose sum is σ = 121275036. Its totient is φ = 121229920.

The previous prime is 121252463. The next prime is 121252529. The reversal of 121252477 is 774252121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87216921 + 34035556 = 9339^2 + 5834^2 .

It is a cyclic number.

It is not a de Polignac number, because 121252477 - 2⁷ = 121252349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121252447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977 + ... + 15697.

It is an arithmetic number, because the mean of its divisors is an integer number (30318759).

Almost surely, 2^121252477 is an apocalyptic number.

It is an amenable number.

121252477 is a deficient number, since it is larger than the sum of its proper divisors (22559).

121252477 is an equidigital number, since it uses as much as digits as its factorization.

121252477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22558.

The product of its digits is 7840, while the sum is 31.

The square root of 121252477 is about 11011.4702469743. The cubic root of 121252477 is about 494.9525200182.

The spelling of 121252477 in words is "one hundred twenty-one million, two hundred fifty-two thousand, four hundred seventy-seven".