1112212112231 has 32 divisors (see below), whose sum is σ = 1225335416832. Its totient is φ = 1001149061760.

The previous prime is 1112212112227. The next prime is 1112212112243. The reversal of 1112212112231 is 1322112122111.

It is a cyclic number.

It is not a de Polignac number, because 1112212112231 - 2² = 1112212112227 is a prime.

It is a super-2 number, since 2×1112212112231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112212112261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610098986 + ... + 610100808.

It is an arithmetic number, because the mean of its divisors is an integer number (38291731776).

Almost surely, 2^{1112212112231} is an apocalyptic number.

1112212112231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1112212112231 is a deficient number, since it is larger than the sum of its proper divisors (113123304601).

1112212112231 is a wasteful number, since it uses less digits than its factorization.

1112212112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its digits is 96, while the sum is 20.

Adding to 1112212112231 its reverse (1322112122111), we get a palindrome (2434324234342).

The spelling of 1112212112231 in words is "one trillion, one hundred twelve billion, two hundred twelve million, one hundred twelve thousand, two hundred thirty-one".