11922213 has 4 divisors (see below), whose sum is σ = 15896288. Its totient is φ = 7948140.

The previous prime is 11922193. The next prime is 11922221. The reversal of 11922213 is 31222911.

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 11922213 - 2⁸ = 11921957 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 11922213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11922283) 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, 1987033 + ... + 1987038.

It is an arithmetic number, because the mean of its divisors is an integer number (3974072).

Almost surely, 2^11922213 is an apocalyptic number.

It is an amenable number.

11922213 is a deficient number, since it is larger than the sum of its proper divisors (3974075).

11922213 is an equidigital number, since it uses as much as digits as its factorization.

11922213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974074.

The product of its digits is 216, while the sum is 21.

The square root of 11922213 is about 3452.8557745727. The cubic root of 11922213 is about 228.4470874870.

The spelling of 11922213 in words is "eleven million, nine hundred twenty-two thousand, two hundred thirteen".