121396730111 has 4 divisors (see below), whose sum is σ = 121543522632. Its totient is φ = 121249937592.

The previous prime is 121396730101. The next prime is 121396730149. The reversal of 121396730111 is 111037693121.

It is a happy number.

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 121396730111 - 2⁶ = 121396730047 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 (121396730101) 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, 73395020 + ... + 73396673.

It is an arithmetic number, because the mean of its divisors is an integer number (30385880658).

Almost surely, 2^121396730111 is an apocalyptic number.

121396730111 is a deficient number, since it is larger than the sum of its proper divisors (146792521).

121396730111 is an equidigital number, since it uses as much as digits as its factorization.

121396730111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146792520.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 121396730111 in words is "one hundred twenty-one billion, three hundred ninety-six million, seven hundred thirty thousand, one hundred eleven".