122261493 has 4 divisors (see below), whose sum is σ = 163015328. Its totient is φ = 81507660.

The previous prime is 122261483. The next prime is 122261521. The reversal of 122261493 is 394162221.

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 122261493 - 2⁹ = 122260981 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 122261493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122261413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20376913 + ... + 20376918.

It is an arithmetic number, because the mean of its divisors is an integer number (40753832).

Almost surely, 2^122261493 is an apocalyptic number.

It is an amenable number.

122261493 is a deficient number, since it is larger than the sum of its proper divisors (40753835).

122261493 is an equidigital number, since it uses as much as digits as its factorization.

122261493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40753834.

The product of its digits is 5184, while the sum is 30.

The square root of 122261493 is about 11057.1919129587. The cubic root of 122261493 is about 496.3216633706.

The spelling of 122261493 in words is "one hundred twenty-two million, two hundred sixty-one thousand, four hundred ninety-three".