11311230221112 has 32 divisors (see below), whose sum is σ = 28283150008080. Its totient is φ = 3769733479680.

The previous prime is 11311230221069. The next prime is 11311230221117. The reversal of 11311230221112 is 21112203211311.

It is a super-2 number, since 2×11311230221112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311230221117) 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, 42150589 + ... + 42418092.

Almost surely, 2^{11311230221112} is an apocalyptic number.

11311230221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11311230221112 is an abundant number, since it is smaller than the sum of its proper divisors (16971919786968).

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

11311230221112 is a wasteful number, since it uses less digits than its factorization.

11311230221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84574263 (or 84574259 counting only the distinct ones).

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

Adding to 11311230221112 its reverse (21112203211311), we get a palindrome (32423433432423).

The spelling of 11311230221112 in words is "eleven trillion, three hundred eleven billion, two hundred thirty million, two hundred twenty-one thousand, one hundred twelve".