2231111123112 has 32 divisors (see below), whose sum is σ = 5757706126080. Its totient is φ = 719713265280.

The previous prime is 2231111123071. The next prime is 2231111123117. The reversal of 2231111123112 is 2113211111322.

It is a super-3 number, since 3×2231111123112³ (a number of 38 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2231111123117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499401893 + ... + 1499403380.

It is an arithmetic number, because the mean of its divisors is an integer number (179928316440).

Almost surely, 2^{2231111123112} is an apocalyptic number.

It is an amenable number.

2231111123112 is an abundant number, since it is smaller than the sum of its proper divisors (3526595002968).

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

2231111123112 is a wasteful number, since it uses less digits than its factorization.

2231111123112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998805313 (or 2998805309 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

Adding to 2231111123112 its reverse (2113211111322), we get a palindrome (4344322234434).

The spelling of 2231111123112 in words is "two trillion, two hundred thirty-one billion, one hundred eleven million, one hundred twenty-three thousand, one hundred twelve".