22742211 has 4 divisors (see below), whose sum is σ = 30322952. Its totient is φ = 15161472.

The previous prime is 22742197. The next prime is 22742273. The reversal of 22742211 is 11224722.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22742211 - 2¹⁵ = 22709443 is a prime.

It is a super-2 number, since 2×22742211² = 1034416322337042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22742611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3790366 + ... + 3790371.

It is an arithmetic number, because the mean of its divisors is an integer number (7580738).

Almost surely, 2^22742211 is an apocalyptic number.

22742211 is a deficient number, since it is larger than the sum of its proper divisors (7580741).

22742211 is an equidigital number, since it uses as much as digits as its factorization.

22742211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580740.

The product of its digits is 448, while the sum is 21.

The square root of 22742211 is about 4768.8794281256. The cubic root of 22742211 is about 283.3202142330.

Adding to 22742211 its reverse (11224722), we get a palindrome (33966933).

The spelling of 22742211 in words is "twenty-two million, seven hundred forty-two thousand, two hundred eleven".