222100022021 has 16 divisors (see below), whose sum is σ = 230278118400. Its totient is φ = 213957038400.

The previous prime is 222100022003. The next prime is 222100022033. The reversal of 222100022021 is 120220001222.

It is a cyclic number.

It is not a de Polignac number, because 222100022021 - 2¹⁴ = 222100005637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222100021987 and 222100022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100022051) 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, 37891631 + ... + 37897491.

It is an arithmetic number, because the mean of its divisors is an integer number (14392382400).

Almost surely, 2^222100022021 is an apocalyptic number.

It is an amenable number.

222100022021 is a deficient number, since it is larger than the sum of its proper divisors (8178096379).

222100022021 is a wasteful number, since it uses less digits than its factorization.

222100022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222100022021 its reverse (120220001222), we get a palindrome (342320023243).

The spelling of 222100022021 in words is "two hundred twenty-two billion, one hundred million, twenty-two thousand, twenty-one".