121612737 has 4 divisors (see below), whose sum is σ = 162150320. Its totient is φ = 81075156.

The previous prime is 121612723. The next prime is 121612739. The reversal of 121612737 is 737216121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121612737 - 2¹¹ = 121610689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121612739) 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, 20268787 + ... + 20268792.

It is an arithmetic number, because the mean of its divisors is an integer number (40537580).

Almost surely, 2^121612737 is an apocalyptic number.

It is an amenable number.

121612737 is a deficient number, since it is larger than the sum of its proper divisors (40537583).

121612737 is an equidigital number, since it uses as much as digits as its factorization.

121612737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40537582.

The product of its digits is 3528, while the sum is 30.

The square root of 121612737 is about 11027.8165109871. The cubic root of 121612737 is about 495.4422290205.

Adding to 121612737 its reverse (737216121), we get a palindrome (858828858).

The spelling of 121612737 in words is "one hundred twenty-one million, six hundred twelve thousand, seven hundred thirty-seven".