222202131021 has 36 divisors (see below), whose sum is σ = 359531370900. Its totient is φ = 132024582144.

The previous prime is 222202131007. The next prime is 222202131059. The reversal of 222202131021 is 120131202222.

It can be written as a sum of positive squares in 6 ways, for example, as 22025528100 + 200176602921 = 148410^2 + 447411^2 .

It is not a de Polignac number, because 222202131021 - 2⁵ = 222202130989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222202130985 and 222202131003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202131071) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2474676 + ... + 2562893.

It is an arithmetic number, because the mean of its divisors is an integer number (9986982525).

Almost surely, 2^222202131021 is an apocalyptic number.

It is an amenable number.

222202131021 is a deficient number, since it is larger than the sum of its proper divisors (137329239879).

222202131021 is a wasteful number, since it uses less digits than its factorization.

222202131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037630 (or 5037614 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222202131021 its reverse (120131202222), we get a palindrome (342333333243).

The spelling of 222202131021 in words is "two hundred twenty-two billion, two hundred two million, one hundred thirty-one thousand, twenty-one".