22220613 has 24 divisors (see below), whose sum is σ = 33111936. Its totient is φ = 14352000.

The previous prime is 22220603. The next prime is 22220623. The reversal of 22220613 is 31602222.

It is an interprime number because it is at equal distance from previous prime (22220603) and next prime (22220623).

It is not a de Polignac number, because 22220613 - 2⁸ = 22220357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55213 + ... + 55613.

It is an arithmetic number, because the mean of its divisors is an integer number (1379664).

Almost surely, 2^22220613 is an apocalyptic number.

It is an amenable number.

22220613 is a deficient number, since it is larger than the sum of its proper divisors (10891323).

22220613 is a wasteful number, since it uses less digits than its factorization.

22220613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22220613 is about 4713.8745210283. The cubic root of 22220613 is about 281.1374352505.

Adding to 22220613 its reverse (31602222), we get a palindrome (53822835).

The spelling of 22220613 in words is "twenty-two million, two hundred twenty thousand, six hundred thirteen".