22020013 has 4 divisors (see below), whose sum is σ = 22730368. Its totient is φ = 21309660.

The previous prime is 22019989. The next prime is 22020023. The reversal of 22020013 is 31002022.

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 a de Polignac number, because none of the positive numbers 2^k-22020013 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 (22020023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355131 + ... + 355192.

It is an arithmetic number, because the mean of its divisors is an integer number (5682592).

Almost surely, 2^22020013 is an apocalyptic number.

It is an amenable number.

22020013 is a deficient number, since it is larger than the sum of its proper divisors (710355).

22020013 is an equidigital number, since it uses as much as digits as its factorization.

22020013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710354.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22020013 is about 4692.5486678350. The cubic root of 22020013 is about 280.2888727891.

Adding to 22020013 its reverse (31002022), we get a palindrome (53022035).

Subtracting 22020013 from its reverse (31002022), we obtain a square (8982009 = 2997²).

The spelling of 22020013 in words is "twenty-two million, twenty thousand, thirteen".