22612001 has 4 divisors (see below), whose sum is σ = 22624404. Its totient is φ = 22599600.

The previous prime is 22611997. The next prime is 22612019. The reversal of 22612001 is 10021622.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14432401 + 8179600 = 3799^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 22612001 - 2² = 22611997 is a prime.

It is a super-2 number, since 2×22612001² = 1022605178448002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22612021) 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, 2870 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (5656101).

Almost surely, 2^22612001 is an apocalyptic number.

It is an amenable number.

22612001 is a deficient number, since it is larger than the sum of its proper divisors (12403).

22612001 is a wasteful number, since it uses less digits than its factorization.

22612001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12402.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 22612001 is about 4755.2077767433. The cubic root of 22612001 is about 282.7784645569.

Adding to 22612001 its reverse (10021622), we get a palindrome (32633623).

The spelling of 22612001 in words is "twenty-two million, six hundred twelve thousand, one".