122691349 has 4 divisors (see below), whose sum is σ = 133845120. Its totient is φ = 111537580.

The previous prime is 122691307. The next prime is 122691353. The reversal of 122691349 is 943196221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 943196221 = 11 ⋅85745111.

It is not a de Polignac number, because 122691349 - 2⁹ = 122690837 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 (122691389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576869 + ... + 5576890.

It is an arithmetic number, because the mean of its divisors is an integer number (33461280).

Almost surely, 2^122691349 is an apocalyptic number.

It is an amenable number.

122691349 is a deficient number, since it is larger than the sum of its proper divisors (11153771).

122691349 is a wasteful number, since it uses less digits than its factorization.

122691349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11153770.

The product of its digits is 23328, while the sum is 37.

The square root of 122691349 is about 11076.6127042521. The cubic root of 122691349 is about 496.9026511463.

The spelling of 122691349 in words is "one hundred twenty-two million, six hundred ninety-one thousand, three hundred forty-nine".