121752056051 has 4 divisors (see below), whose sum is σ = 121930317432. Its totient is φ = 121573794672.

The previous prime is 121752056047. The next prime is 121752056053. The reversal of 121752056051 is 150650257121.

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

It is a cyclic number.

It is not a de Polignac number, because 121752056051 - 2² = 121752056047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121752056053) 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, 89129666 + ... + 89131031.

It is an arithmetic number, because the mean of its divisors is an integer number (30482579358).

Almost surely, 2^121752056051 is an apocalyptic number.

121752056051 is a deficient number, since it is larger than the sum of its proper divisors (178261381).

121752056051 is an equidigital number, since it uses as much as digits as its factorization.

121752056051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178261380.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 121752056051 in words is "one hundred twenty-one billion, seven hundred fifty-two million, fifty-six thousand, fifty-one".