22251011 has 4 divisors (see below), whose sum is σ = 23559912. Its totient is φ = 20942112.

The previous prime is 22250999. The next prime is 22251013. The reversal of 22251011 is 11015222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22251011 - 2⁶ = 22250947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22251013) 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, 654425 + ... + 654458.

It is an arithmetic number, because the mean of its divisors is an integer number (5889978).

Almost surely, 2^22251011 is an apocalyptic number.

22251011 is a deficient number, since it is larger than the sum of its proper divisors (1308901).

22251011 is a wasteful number, since it uses less digits than its factorization.

22251011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308900.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 22251011 is about 4717.0977305966. The cubic root of 22251011 is about 281.2655763554.

Adding to 22251011 its reverse (11015222), we get a palindrome (33266233).

The spelling of 22251011 in words is "twenty-two million, two hundred fifty-one thousand, eleven".