121625777 has 8 divisors (see below), whose sum is σ = 149693376. Its totient is φ = 96231312.

The previous prime is 121625773. The next prime is 121625789. The reversal of 121625777 is 777526121.

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 121625777 - 2² = 121625773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121625777.

It is not an unprimeable number, because it can be changed into a prime (121625773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668183 + ... + 668364.

It is an arithmetic number, because the mean of its divisors is an integer number (18711672).

Almost surely, 2^121625777 is an apocalyptic number.

It is an amenable number.

121625777 is a deficient number, since it is larger than the sum of its proper divisors (28067599).

121625777 is a wasteful number, since it uses less digits than its factorization.

121625777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336567.

The product of its digits is 41160, while the sum is 38.

The square root of 121625777 is about 11028.4077273195. The cubic root of 121625777 is about 495.4599364195.

The spelling of 121625777 in words is "one hundred twenty-one million, six hundred twenty-five thousand, seven hundred seventy-seven".