121125736674721 has 16 divisors (see below), whose sum is σ = 123085596693760. Its totient is φ = 119174042413440.

The previous prime is 121125736674673. The next prime is 121125736674743. The reversal of 121125736674721 is 127476637521121.

It is a cyclic number.

It is not a de Polignac number, because 121125736674721 - 2¹⁵ = 121125736641953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121125736674221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444847006 + ... + 445119208.

It is an arithmetic number, because the mean of its divisors is an integer number (7692849793360).

Almost surely, 2^{121125736674721} is an apocalyptic number.

It is an amenable number.

121125736674721 is a deficient number, since it is larger than the sum of its proper divisors (1959860019039).

121125736674721 is a wasteful number, since it uses less digits than its factorization.

121125736674721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287176.

The product of its digits is 5927040, while the sum is 55.

The spelling of 121125736674721 in words is "one hundred twenty-one trillion, one hundred twenty-five billion, seven hundred thirty-six million, six hundred seventy-four thousand, seven hundred twenty-one".