22122641 has 4 divisors (see below), whose sum is σ = 22371300. Its totient is φ = 21873984.

The previous prime is 22122629. The next prime is 22122643. The reversal of 22122641 is 14622122.

It is a happy number.

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 5271616 + 16851025 = 2296^2 + 4105^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122641 - 2¹⁸ = 21860497 is a prime.

It is a super-2 number, since 2×22122641² = 978822489629762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122643) 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, 124196 + ... + 124373.

It is an arithmetic number, because the mean of its divisors is an integer number (5592825).

Almost surely, 2^22122641 is an apocalyptic number.

It is an amenable number.

22122641 is a deficient number, since it is larger than the sum of its proper divisors (248659).

22122641 is an equidigital number, since it uses as much as digits as its factorization.

22122641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248658.

The product of its digits is 384, while the sum is 20.

The square root of 22122641 is about 4703.4711650014. The cubic root of 22122641 is about 280.7236426351.

Adding to 22122641 its reverse (14622122), we get a palindrome (36744763).

The spelling of 22122641 in words is "twenty-two million, one hundred twenty-two thousand, six hundred forty-one".