121774613 has 4 divisors (see below), whose sum is σ = 122136300. Its totient is φ = 121412928.

The previous prime is 121774607. The next prime is 121774619. The reversal of 121774613 is 316477121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316477121 = 59 ⋅5364019.

It is an interprime number because it is at equal distance from previous prime (121774607) and next prime (121774619).

It can be written as a sum of positive squares in 2 ways, for example, as 30724849 + 91049764 = 5543^2 + 9542^2 .

It is a cyclic number.

It is not a de Polignac number, because 121774613 - 2⁸ = 121774357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121774613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121774619) 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, 180338 + ... + 181011.

It is an arithmetic number, because the mean of its divisors is an integer number (30534075).

Almost surely, 2^121774613 is an apocalyptic number.

It is an amenable number.

121774613 is a deficient number, since it is larger than the sum of its proper divisors (361687).

121774613 is an equidigital number, since it uses as much as digits as its factorization.

121774613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361686.

The product of its digits is 7056, while the sum is 32.

The square root of 121774613 is about 11035.1535104864. The cubic root of 121774613 is about 495.6619555895.

The spelling of 121774613 in words is "one hundred twenty-one million, seven hundred seventy-four thousand, six hundred thirteen".