222212011181 has 2 divisors, whose sum is σ = 222212011182. Its totient is φ = 222212011180.

The previous prime is 222212011163. The next prime is 222212011211. The reversal of 222212011181 is 181110212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177627688681 + 44584322500 = 421459^2 + 211150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222212011181 is a prime.

It is a super-2 number, since 2×222212011181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222212091181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111106005590 + 111106005591.

It is an arithmetic number, because the mean of its divisors is an integer number (111106005591).

Almost surely, 2^222212011181 is an apocalyptic number.

It is an amenable number.

222212011181 is a deficient number, since it is larger than the sum of its proper divisors (1).

222212011181 is an equidigital number, since it uses as much as digits as its factorization.

222212011181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 222212011181 in words is "two hundred twenty-two billion, two hundred twelve million, eleven thousand, one hundred eighty-one".