222223220081 has 2 divisors, whose sum is σ = 222223220082. Its totient is φ = 222223220080.

The previous prime is 222223220077. The next prime is 222223220119. The reversal of 222223220081 is 180022322222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218402002225 + 3821217856 = 467335^2 + 61816^2 .

It is a cyclic number.

It is not a de Polignac number, because 222223220081 - 2² = 222223220077 is a prime.

It is a super-2 number, since 2×222223220081² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222223220081.

It is not a weakly prime, because it can be changed into another prime (222223220071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111610040 + 111111610041.

It is an arithmetic number, because the mean of its divisors is an integer number (111111610041).

Almost surely, 2^222223220081 is an apocalyptic number.

It is an amenable number.

222223220081 is a deficient number, since it is larger than the sum of its proper divisors (1).

222223220081 is an equidigital number, since it uses as much as digits as its factorization.

222223220081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

The spelling of 222223220081 in words is "two hundred twenty-two billion, two hundred twenty-three million, two hundred twenty thousand, eighty-one".