811112222 has 8 divisors (see below), whose sum is σ = 1222972896. Its totient is φ = 403454592.

The previous prime is 811112173. The next prime is 811112233. The reversal of 811112222 is 222211118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 811112194 and 811112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050278 + ... + 1051049.

It is an arithmetic number, because the mean of its divisors is an integer number (152871612).

Almost surely, 2^811112222 is an apocalyptic number.

811112222 is a deficient number, since it is larger than the sum of its proper divisors (411860674).

811112222 is a wasteful number, since it uses less digits than its factorization.

811112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101522.

The product of its digits is 128, while the sum is 20.

The square root of 811112222 is about 28480.0319873416. The cubic root of 811112222 is about 932.5962149666.

The spelling of 811112222 in words is "eight hundred eleven million, one hundred twelve thousand, two hundred twenty-two".