22022331021 has 6 divisors (see below), whose sum is σ = 31810033710. Its totient is φ = 14681554008.

The previous prime is 22022330989. The next prime is 22022331031. The reversal of 22022331021 is 12013322022.

It can be written as a sum of positive squares in only one way, i.e., 21028190121 + 994140900 = 145011^2 + 31530^2 .

It is not a de Polignac number, because 22022331021 - 2⁵ = 22022330989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022330985 and 22022331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022331031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1223462826 + ... + 1223462843.

It is an arithmetic number, because the mean of its divisors is an integer number (5301672285).

Almost surely, 2^22022331021 is an apocalyptic number.

It is an amenable number.

22022331021 is a deficient number, since it is larger than the sum of its proper divisors (9787702689).

22022331021 is a wasteful number, since it uses less digits than its factorization.

22022331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446925675 (or 2446925672 counting only the distinct ones).

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

Adding to 22022331021 its reverse (12013322022), we get a palindrome (34035653043).

The spelling of 22022331021 in words is "twenty-two billion, twenty-two million, three hundred thirty-one thousand, twenty-one".