23220611 has 4 divisors (see below), whose sum is σ = 23244000. Its totient is φ = 23197224.

The previous prime is 23220601. The next prime is 23220649. The reversal of 23220611 is 11602232.

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 23220611 - 2²² = 19026307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23220611.

It is not an unprimeable number, because it can be changed into a prime (23220601) 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, 10136 + ... + 12213.

It is an arithmetic number, because the mean of its divisors is an integer number (5811000).

Almost surely, 2^23220611 is an apocalyptic number.

23220611 is a deficient number, since it is larger than the sum of its proper divisors (23389).

23220611 is a wasteful number, since it uses less digits than its factorization.

23220611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23388.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 23220611 is about 4818.7769195098. The cubic root of 23220611 is about 285.2930647030.

Adding to 23220611 its reverse (11602232), we get a palindrome (34822843).

The spelling of 23220611 in words is "twenty-three million, two hundred twenty thousand, six hundred eleven".