22221494 has 8 divisors (see below), whose sum is σ = 33453408. Its totient is φ = 11070360.

The previous prime is 22221491. The next prime is 22221517. The reversal of 22221494 is 49412222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19502 + ... + 20609.

It is an arithmetic number, because the mean of its divisors is an integer number (4181676).

Almost surely, 2^22221494 is an apocalyptic number.

22221494 is a deficient number, since it is larger than the sum of its proper divisors (11231914).

22221494 is a wasteful number, since it uses less digits than its factorization.

22221494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40390.

The product of its digits is 2304, while the sum is 26.

The square root of 22221494 is about 4713.9679676468. The cubic root of 22221494 is about 281.1411507017.

The spelling of 22221494 in words is "twenty-two million, two hundred twenty-one thousand, four hundred ninety-four".