113144221212 has 24 divisors (see below), whose sum is σ = 288003472512. Its totient is φ = 34286127600.

The previous prime is 113144221081. The next prime is 113144221213. The reversal of 113144221212 is 212122441311.

It is a super-2 number, since 2×113144221212² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113144221213) 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, 428576464 + ... + 428576727.

It is an arithmetic number, because the mean of its divisors is an integer number (12000144688).

Almost surely, 2^113144221212 is an apocalyptic number.

113144221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113144221212 is an abundant number, since it is smaller than the sum of its proper divisors (174859251300).

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

113144221212 is a wasteful number, since it uses less digits than its factorization.

113144221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857153209 (or 857153207 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

Adding to 113144221212 its reverse (212122441311), we get a palindrome (325266662523).

The spelling of 113144221212 in words is "one hundred thirteen billion, one hundred forty-four million, two hundred twenty-one thousand, two hundred twelve".