22022022021 has 16 divisors (see below), whose sum is σ = 30124892160. Its totient is φ = 14302053360.

The previous prime is 22022022019. The next prime is 22022022023. The reversal of 22022022021 is 12022022022.

It is an interprime number because it is at equal distance from previous prime (22022022019) and next prime (22022022023).

It is not a de Polignac number, because 22022022021 - 2¹ = 22022022019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022022023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176325 + ... + 274106.

It is an arithmetic number, because the mean of its divisors is an integer number (1882805760).

Almost surely, 2^22022022021 is an apocalyptic number.

It is an amenable number.

22022022021 is a deficient number, since it is larger than the sum of its proper divisors (8102870139).

22022022021 is a wasteful number, since it uses less digits than its factorization.

22022022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450856.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22022022021 its reverse (12022022022), we get a palindrome (34044044043).

Subtracting from 22022022021 its reverse (12022022022), we obtain a palindrome (9999999999).

The spelling of 22022022021 in words is "twenty-two billion, twenty-two million, twenty-two thousand, twenty-one".