123115222 has 4 divisors (see below), whose sum is σ = 184672836. Its totient is φ = 61557610.

The previous prime is 123115171. The next prime is 123115271. The reversal of 123115222 is 222511321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123115222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30778804 + ... + 30778807.

It is an arithmetic number, because the mean of its divisors is an integer number (46168209).

Almost surely, 2^123115222 is an apocalyptic number.

123115222 is a deficient number, since it is larger than the sum of its proper divisors (61557614).

123115222 is an equidigital number, since it uses as much as digits as its factorization.

123115222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61557613.

The product of its digits is 240, while the sum is 19.

The square root of 123115222 is about 11095.7298993802. The cubic root of 123115222 is about 497.4742250731.

Adding to 123115222 its reverse (222511321), we get a palindrome (345626543).

The spelling of 123115222 in words is "one hundred twenty-three million, one hundred fifteen thousand, two hundred twenty-two".