2312222222 has 4 divisors (see below), whose sum is σ = 3468333336. Its totient is φ = 1156111110.

The previous prime is 2312222197. The next prime is 2312222243. The reversal of 2312222222 is 2222222132.

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

2312222222 is a modest number, since divided by 222222 gives 2312 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2312222194 and 2312222203.

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, 578055554 + ... + 578055557.

It is an arithmetic number, because the mean of its divisors is an integer number (867083334).

Almost surely, 2^2312222222 is an apocalyptic number.

2312222222 is a deficient number, since it is larger than the sum of its proper divisors (1156111114).

2312222222 is a wasteful number, since it uses less digits than its factorization.

2312222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156111113.

The product of its digits is 768, while the sum is 20.

The square root of 2312222222 is about 48085.5718693248. The cubic root of 2312222222 is about 1322.3401673376.

Adding to 2312222222 its reverse (2222222132), we get a palindrome (4534444354).

The spelling of 2312222222 in words is "two billion, three hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".