121184893945 has 4 divisors (see below), whose sum is σ = 145421872740. Its totient is φ = 96947915152.

The previous prime is 121184893931. The next prime is 121184893967. The reversal of 121184893945 is 549398481121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87665142889 + 33519751056 = 296083^2 + 183084^2 .

It is a cyclic number.

It is not a de Polignac number, because 121184893945 - 2⁹ = 121184893433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12118489390 + ... + 12118489399.

It is an arithmetic number, because the mean of its divisors is an integer number (36355468185).

Almost surely, 2^121184893945 is an apocalyptic number.

It is an amenable number.

121184893945 is a deficient number, since it is larger than the sum of its proper divisors (24236978795).

121184893945 is an equidigital number, since it uses as much as digits as its factorization.

121184893945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24236978794.

The product of its digits is 2488320, while the sum is 55.

The spelling of 121184893945 in words is "one hundred twenty-one billion, one hundred eighty-four million, eight hundred ninety-three thousand, nine hundred forty-five".