22147222 has 8 divisors (see below), whose sum is σ = 33621336. Its totient is φ = 10940112.

The previous prime is 22147207. The next prime is 22147231. The reversal of 22147222 is 22274122.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 22147193 and 22147202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66543 + ... + 66874.

It is an arithmetic number, because the mean of its divisors is an integer number (4202667).

Almost surely, 2^22147222 is an apocalyptic number.

22147222 is a deficient number, since it is larger than the sum of its proper divisors (11474114).

22147222 is a wasteful number, since it uses less digits than its factorization.

22147222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133502.

The product of its digits is 896, while the sum is 22.

The square root of 22147222 is about 4706.0835096713. The cubic root of 22147222 is about 280.8275770867.

The spelling of 22147222 in words is "twenty-two million, one hundred forty-seven thousand, two hundred twenty-two".