222132012021 has 12 divisors (see below), whose sum is σ = 320992365772. Its totient is φ = 148025693376.

The previous prime is 222132012007. The next prime is 222132012043. The reversal of 222132012021 is 120210231222.

222132012021 is a `hidden beast` number, since 2 + 221 + 320 + 120 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29071955025 + 193060056996 = 170505^2 + 439386^2 .

It is not a de Polignac number, because 222132012021 - 2⁵ = 222132011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222132011985 and 222132012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222132014021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5170306 + ... + 5213091.

Almost surely, 2^222132012021 is an apocalyptic number.

It is an amenable number.

222132012021 is a deficient number, since it is larger than the sum of its proper divisors (98860353751).

222132012021 is a wasteful number, since it uses less digits than its factorization.

222132012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10385780 (or 10385777 counting only the distinct ones).

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

Adding to 222132012021 its reverse (120210231222), we get a palindrome (342342243243).

The spelling of 222132012021 in words is "two hundred twenty-two billion, one hundred thirty-two million, twelve thousand, twenty-one".