222102022021 has 12 divisors (see below), whose sum is σ = 246545797932. Its totient is φ = 199911800000.

The previous prime is 222102021971. The next prime is 222102022099. The reversal of 222102022021 is 120220201222.

It can be written as a sum of positive squares in 2 ways, for example, as 149625844225 + 72476177796 = 386815^2 + 269214^2 .

It is not a de Polignac number, because 222102022021 - 2⁷ = 222102021893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222102021986 and 222102022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102028021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9074680 + ... + 9099121.

It is an arithmetic number, because the mean of its divisors is an integer number (20545483161).

Almost surely, 2^222102022021 is an apocalyptic number.

It is an amenable number.

222102022021 is a deficient number, since it is larger than the sum of its proper divisors (24443775911).

222102022021 is a wasteful number, since it uses less digits than its factorization.

222102022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18173924 (or 18173913 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222102022021 its reverse (120220201222), we get a palindrome (342322223243).

The spelling of 222102022021 in words is "two hundred twenty-two billion, one hundred two million, twenty-two thousand, twenty-one".