22451011 has 4 divisors (see below), whose sum is σ = 24492024. Its totient is φ = 20410000.

The previous prime is 22451003. The next prime is 22451029. The reversal of 22451011 is 11015422.

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 22451011 - 2³ = 22451003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22451041) 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, 1020490 + ... + 1020511.

It is an arithmetic number, because the mean of its divisors is an integer number (6123006).

Almost surely, 2^22451011 is an apocalyptic number.

22451011 is a deficient number, since it is larger than the sum of its proper divisors (2041013).

22451011 is a wasteful number, since it uses less digits than its factorization.

22451011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041012.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 22451011 is about 4738.2497823564. The cubic root of 22451011 is about 282.1057690531.

Adding to 22451011 its reverse (11015422), we get a palindrome (33466433).

The spelling of 22451011 in words is "twenty-two million, four hundred fifty-one thousand, eleven".