222011323021 has 2 divisors, whose sum is σ = 222011323022. Its totient is φ = 222011323020.

The previous prime is 222011322959. The next prime is 222011323031. The reversal of 222011323021 is 120323110222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161439222025 + 60572100996 = 401795^2 + 246114^2 .

It is a cyclic number.

It is not a de Polignac number, because 222011323021 - 2⁷ = 222011322893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222011323021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222011323031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111005661510 + 111005661511.

It is an arithmetic number, because the mean of its divisors is an integer number (111005661511).

Almost surely, 2^222011323021 is an apocalyptic number.

It is an amenable number.

222011323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222011323021 is an equidigital number, since it uses as much as digits as its factorization.

222011323021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222011323021 its reverse (120323110222), we get a palindrome (342334433243).

The spelling of 222011323021 in words is "two hundred twenty-two billion, eleven million, three hundred twenty-three thousand, twenty-one".