222210181 has 2 divisors, whose sum is σ = 222210182. Its totient is φ = 222210180.

The previous prime is 222210169. The next prime is 222210203. The reversal of 222210181 is 181012222.

222210181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141372100 + 80838081 = 11890^2 + 8991^2 .

It is a cyclic number.

It is not a de Polignac number, because 222210181 - 2¹³ = 222201989 is a prime.

It is a super-2 number, since 2×222210181² = 98754729080105522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222210101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105090 + 111105091.

It is an arithmetic number, because the mean of its divisors is an integer number (111105091).

Almost surely, 2^222210181 is an apocalyptic number.

It is an amenable number.

222210181 is a deficient number, since it is larger than the sum of its proper divisors (1).

222210181 is an equidigital number, since it uses as much as digits as its factorization.

222210181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 222210181 is about 14906.7159696561. The cubic root of 222210181 is about 605.6959239033.

It can be divided in two parts, 2222 and 10181, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 222210181 in words is "two hundred twenty-two million, two hundred ten thousand, one hundred eighty-one".