22251002 has 8 divisors (see below), whose sum is σ = 33472116. Its totient is φ = 11093632.

The previous prime is 22250999. The next prime is 22251013. The reversal of 22251002 is 20015222.

It can be written as a sum of positive squares in 2 ways, for example, as 20784481 + 1466521 = 4559^2 + 1211^2 .

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

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, 15053 + ... + 16464.

Almost surely, 2^22251002 is an apocalyptic number.

22251002 is a deficient number, since it is larger than the sum of its proper divisors (11221114).

22251002 is a wasteful number, since it uses less digits than its factorization.

22251002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31872.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22251002 is about 4717.0967766201. The cubic root of 22251002 is about 281.2655384337.

Adding to 22251002 its reverse (20015222), we get a palindrome (42266224).

The spelling of 22251002 in words is "twenty-two million, two hundred fifty-one thousand, two".