612222223 has 2 divisors, whose sum is σ = 612222224. Its totient is φ = 612222222.

The previous prime is 612222187. The next prime is 612222263. The reversal of 612222223 is 322222216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612222223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612222194 and 612222203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612222263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306111111 + 306111112.

It is an arithmetic number, because the mean of its divisors is an integer number (306111112).

Almost surely, 2^612222223 is an apocalyptic number.

612222223 is a deficient number, since it is larger than the sum of its proper divisors (1).

612222223 is an equidigital number, since it uses as much as digits as its factorization.

612222223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 612222223 is about 24743.1247622446. The cubic root of 612222223 is about 849.1212246602.

Adding to 612222223 its reverse (322222216), we get a palindrome (934444439).

The spelling of 612222223 in words is "six hundred twelve million, two hundred twenty-two thousand, two hundred twenty-three".