222031123 has 2 divisors, whose sum is σ = 222031124. Its totient is φ = 222031122.

The previous prime is 222031111. The next prime is 222031133. The reversal of 222031123 is 321130222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222031123 - 2²¹ = 219933971 is a prime.

It is a super-2 number, since 2×222031123² = 98595639161282258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222031097 and 222031106.

It is not a weakly prime, because it can be changed into another prime (222031133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111015561 + 111015562.

It is an arithmetic number, because the mean of its divisors is an integer number (111015562).

Almost surely, 2^222031123 is an apocalyptic number.

222031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

222031123 is an equidigital number, since it uses as much as digits as its factorization.

222031123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 222031123 is about 14900.7088086440. The cubic root of 222031123 is about 605.5331893182.

Adding to 222031123 its reverse (321130222), we get a palindrome (543161345).

Subtracting 222031123 from its reverse (321130222), we obtain a palindrome (99099099).

The spelling of 222031123 in words is "two hundred twenty-two million, thirty-one thousand, one hundred twenty-three".