22020907 has 4 divisors (see below), whose sum is σ = 22041640. Its totient is φ = 22000176.

The previous prime is 22020877. The next prime is 22020923. The reversal of 22020907 is 70902022.

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 22020907 - 2¹⁵ = 21988139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22024907) 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, 8682 + ... + 10927.

It is an arithmetic number, because the mean of its divisors is an integer number (5510410).

Almost surely, 2^22020907 is an apocalyptic number.

22020907 is a deficient number, since it is larger than the sum of its proper divisors (20733).

22020907 is a wasteful number, since it uses less digits than its factorization.

22020907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20732.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 22020907 is about 4692.6439242713. The cubic root of 22020907 is about 280.2926659274.

Adding to 22020907 its reverse (70902022), we get a palindrome (92922929).

The spelling of 22020907 in words is "twenty-two million, twenty thousand, nine hundred seven".