22212254 has 16 divisors (see below), whose sum is σ = 35164800. Its totient is φ = 10493784.

The previous prime is 22212233. The next prime is 22212257. The reversal of 22212254 is 45221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24599 + ... + 25485.

It is an arithmetic number, because the mean of its divisors is an integer number (2197800).

Almost surely, 2^22212254 is an apocalyptic number.

22212254 is a deficient number, since it is larger than the sum of its proper divisors (12952546).

22212254 is a wasteful number, since it uses less digits than its factorization.

22212254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567.

The product of its digits is 640, while the sum is 20.

The square root of 22212254 is about 4712.9877996872. The cubic root of 22212254 is about 281.1021778589.

Adding to 22212254 its reverse (45221222), we get a palindrome (67433476).

The spelling of 22212254 in words is "twenty-two million, two hundred twelve thousand, two hundred fifty-four".