22151226 has 16 divisors (see below), whose sum is σ = 46634400. Its totient is φ = 6995088.

The previous prime is 22151209. The next prime is 22151249. The reversal of 22151226 is 62215122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97041 + ... + 97268.

It is an arithmetic number, because the mean of its divisors is an integer number (2914650).

Almost surely, 2^22151226 is an apocalyptic number.

22151226 is an abundant number, since it is smaller than the sum of its proper divisors (24483174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22151226 is a wasteful number, since it uses less digits than its factorization.

22151226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194333.

The product of its digits is 480, while the sum is 21.

The square root of 22151226 is about 4706.5088972613. The cubic root of 22151226 is about 280.8444996886.

Adding to 22151226 its reverse (62215122), we get a palindrome (84366348).

The spelling of 22151226 in words is "twenty-two million, one hundred fifty-one thousand, two hundred twenty-six".