121260557 has 8 divisors (see below), whose sum is σ = 132596352. Its totient is φ = 109976800.

The previous prime is 121260551. The next prime is 121260599. The reversal of 121260557 is 755062121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121260557 - 2¹⁶ = 121195021 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 (121260551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8048 + ... + 17529.

It is an arithmetic number, because the mean of its divisors is an integer number (16574544).

Almost surely, 2^121260557 is an apocalyptic number.

It is an amenable number.

121260557 is a deficient number, since it is larger than the sum of its proper divisors (11335795).

121260557 is a wasteful number, since it uses less digits than its factorization.

121260557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26019.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 121260557 is about 11011.8371310150. The cubic root of 121260557 is about 494.9635139587.

Multiplying 121260557 by its sum of digits (29), we get a palindrome (3516556153).

The spelling of 121260557 in words is "one hundred twenty-one million, two hundred sixty thousand, five hundred fifty-seven".