121606944027 has 4 divisors (see below), whose sum is σ = 162142592040. Its totient is φ = 81071296016.

The previous prime is 121606943963. The next prime is 121606944047. The reversal of 121606944027 is 720449606121.

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 121606944027 - 2⁶ = 121606943963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121606944027.

It is not an unprimeable number, because it can be changed into a prime (121606944047) 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, 20267824002 + ... + 20267824007.

It is an arithmetic number, because the mean of its divisors is an integer number (40535648010).

Almost surely, 2^121606944027 is an apocalyptic number.

121606944027 is a deficient number, since it is larger than the sum of its proper divisors (40535648013).

121606944027 is an equidigital number, since it uses as much as digits as its factorization.

121606944027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40535648012.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 121606944027 in words is "one hundred twenty-one billion, six hundred six million, nine hundred forty-four thousand, twenty-seven".