222115423 has 4 divisors (see below), whose sum is σ = 222184648. Its totient is φ = 222046200.

The previous prime is 222115381. The next prime is 222115429. The reversal of 222115423 is 324511222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222115423 - 2¹³ = 222107231 is a prime.

It is a super-2 number, since 2×222115423² = 98670522268937858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222115394 and 222115403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222115429) 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, 29553 + ... + 36298.

It is an arithmetic number, because the mean of its divisors is an integer number (55546162).

Almost surely, 2^222115423 is an apocalyptic number.

222115423 is a deficient number, since it is larger than the sum of its proper divisors (69225).

222115423 is an equidigital number, since it uses as much as digits as its factorization.

222115423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69224.

The product of its digits is 960, while the sum is 22.

The square root of 222115423 is about 14903.5372646899. The cubic root of 222115423 is about 605.6098151956.

Adding to 222115423 its reverse (324511222), we get a palindrome (546626645).

The spelling of 222115423 in words is "two hundred twenty-two million, one hundred fifteen thousand, four hundred twenty-three".