222022210210021 has 16 divisors (see below), whose sum is σ = 244986415455600. Its totient is φ = 199900998996480.

The previous prime is 222022210209971. The next prime is 222022210210033. The reversal of 222022210210021 is 120012012220222.

It can be written as a sum of positive squares in 8 ways, for example, as 72394759437121 + 149627450772900 = 8508511^2 + 12232230^2 .

It is a cyclic number.

It is not a de Polignac number, because 222022210210021 - 2¹⁵ = 222022210177253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222022210210051) 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, 43360390 + ... + 48209623.

It is an arithmetic number, because the mean of its divisors is an integer number (15311650965975).

Almost surely, 2^{222022210210021} is an apocalyptic number.

It is an amenable number.

222022210210021 is a deficient number, since it is larger than the sum of its proper divisors (22964205245579).

222022210210021 is a wasteful number, since it uses less digits than its factorization.

222022210210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91574616.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222022210210021 its reverse (120012012220222), we get a palindrome (342034222430243).

The spelling of 222022210210021 in words is "two hundred twenty-two trillion, twenty-two billion, two hundred ten million, two hundred ten thousand, twenty-one".