22042061 has 4 divisors (see below), whose sum is σ = 22307712. Its totient is φ = 21776412.

The previous prime is 22042057. The next prime is 22042079. The reversal of 22042061 is 16024022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22042061 - 2² = 22042057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042091) 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, 132701 + ... + 132866.

It is an arithmetic number, because the mean of its divisors is an integer number (5576928).

Almost surely, 2^22042061 is an apocalyptic number.

It is an amenable number.

22042061 is a deficient number, since it is larger than the sum of its proper divisors (265651).

22042061 is an equidigital number, since it uses as much as digits as its factorization.

22042061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265650.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22042061 is about 4694.8973364707. The cubic root of 22042061 is about 280.3823899555.

Adding to 22042061 its reverse (16024022), we get a palindrome (38066083).

The spelling of 22042061 in words is "twenty-two million, forty-two thousand, sixty-one".