2231222312 has 32 divisors (see below), whose sum is σ = 4566002400. Its totient is φ = 1013716800.

The previous prime is 2231222311. The next prime is 2231222339. The reversal of 2231222312 is 2132221322.

It is a happy number.

It is a super-3 number, since 3×2231222312³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231222311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240887 + ... + 249977.

It is an arithmetic number, because the mean of its divisors is an integer number (142687575).

Almost surely, 2^2231222312 is an apocalyptic number.

2231222312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2231222312 is an abundant number, since it is smaller than the sum of its proper divisors (2334780088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231222312 is a wasteful number, since it uses less digits than its factorization.

2231222312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11897 (or 11893 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 2231222312 is about 47235.8159874475. The cubic root of 2231222312 is about 1306.7152154089.

Adding to 2231222312 its reverse (2132221322), we get a palindrome (4363443634).

The spelling of 2231222312 in words is "two billion, two hundred thirty-one million, two hundred twenty-two thousand, three hundred twelve".