2222679181 has 4 divisors (see below), whose sum is σ = 2223003132. Its totient is φ = 2222355232.

The previous prime is 2222679169. The next prime is 2222679187. The reversal of 2222679181 is 1819762222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 782097156 + 1440582025 = 27966^2 + 37955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222679181 is a prime.

It is a super-2 number, since 2×2222679181² = 9880605483301661522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222679187) 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, 151456 + ... + 165481.

It is an arithmetic number, because the mean of its divisors is an integer number (555750783).

Almost surely, 2^2222679181 is an apocalyptic number.

It is an amenable number.

2222679181 is a deficient number, since it is larger than the sum of its proper divisors (323951).

2222679181 is an equidigital number, since it uses as much as digits as its factorization.

2222679181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323950.

The product of its digits is 48384, while the sum is 40.

The square root of 2222679181 is about 47145.2986097235. The cubic root of 2222679181 is about 1305.0453209159.

The spelling of 2222679181 in words is "two billion, two hundred twenty-two million, six hundred seventy-nine thousand, one hundred eighty-one".