121775234077 has 4 divisors (see below), whose sum is σ = 139171696096. Its totient is φ = 104378772060.

The previous prime is 121775234059. The next prime is 121775234081. The reversal of 121775234077 is 770432577121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121775234077 - 2⁷ = 121775233949 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 (121775234057) 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, 8698230999 + ... + 8698231012.

It is an arithmetic number, because the mean of its divisors is an integer number (34792924024).

Almost surely, 2^121775234077 is an apocalyptic number.

It is an amenable number.

121775234077 is a deficient number, since it is larger than the sum of its proper divisors (17396462019).

121775234077 is an equidigital number, since it uses as much as digits as its factorization.

121775234077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17396462018.

The product of its (nonzero) digits is 576240, while the sum is 46.

The spelling of 121775234077 in words is "one hundred twenty-one billion, seven hundred seventy-five million, two hundred thirty-four thousand, seventy-seven".