22221495 has 12 divisors (see below), whose sum is σ = 38517336. Its totient is φ = 11851440.

The previous prime is 22221491. The next prime is 22221517. The reversal of 22221495 is 59412222.

It is a happy number.

It is not a de Polignac number, because 22221495 - 2² = 22221491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221491) 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 11 ways as a sum of consecutive naturals, for example, 246861 + ... + 246950.

It is an arithmetic number, because the mean of its divisors is an integer number (3209778).

Almost surely, 2^22221495 is an apocalyptic number.

22221495 is a deficient number, since it is larger than the sum of its proper divisors (16295841).

22221495 is a wasteful number, since it uses less digits than its factorization.

22221495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493822 (or 493819 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 22221495 is about 4713.9680737145. The cubic root of 22221495 is about 281.1411549189.

The spelling of 22221495 in words is "twenty-two million, two hundred twenty-one thousand, four hundred ninety-five".