222348181 has 4 divisors (see below), whose sum is σ = 242561664. Its totient is φ = 202134700.

The previous prime is 222348173. The next prime is 222348221. The reversal of 222348181 is 181843222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222348181 - 2³ = 222348173 is a prime.

It is a super-2 number, since 2×222348181² = 98877427188017522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222348101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10106725 + ... + 10106746.

It is an arithmetic number, because the mean of its divisors is an integer number (60640416).

Almost surely, 2^222348181 is an apocalyptic number.

It is an amenable number.

222348181 is a deficient number, since it is larger than the sum of its proper divisors (20213483).

222348181 is a wasteful number, since it uses less digits than its factorization.

222348181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20213482.

The product of its digits is 6144, while the sum is 31.

The square root of 222348181 is about 14911.3440373428. The cubic root of 222348181 is about 605.8212838064.

The spelling of 222348181 in words is "two hundred twenty-two million, three hundred forty-eight thousand, one hundred eighty-one".