211111112233112 has 128 divisors (see below), whose sum is σ = 490797259344000. Its totient is φ = 82897411903488.

The previous prime is 211111112233057. The next prime is 211111112233141. The reversal of 211111112233112 is 211332211111112.

It is a super-2 number, since 2×211111112233112² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107955014 + ... + 109893162.

It is an arithmetic number, because the mean of its divisors is an integer number (3834353588625).

Almost surely, 2^{211111112233112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211111112233112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245398629672000).

211111112233112 is an abundant number, since it is smaller than the sum of its proper divisors (279686147110888).

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

211111112233112 is a wasteful number, since it uses less digits than its factorization.

211111112233112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939285 (or 1939281 counting only the distinct ones).

The product of its digits is 144, while the sum is 23.

Adding to 211111112233112 its reverse (211332211111112), we get a palindrome (422443323344224).

The spelling of 211111112233112 in words is "two hundred eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred thirty-three thousand, one hundred twelve".