2111312412 has 96 divisors (see below), whose sum is σ = 6164121600. Its totient is φ = 619142400.

The previous prime is 2111312369. The next prime is 2111312429. The reversal of 2111312412 is 2142131112.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

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, 8164 + ... + 65492.

It is an arithmetic number, because the mean of its divisors is an integer number (64209600).

Almost surely, 2^2111312412 is an apocalyptic number.

2111312412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111312412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3082060800).

2111312412 is an abundant number, since it is smaller than the sum of its proper divisors (4052809188).

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

2111312412 is a wasteful number, since it uses less digits than its factorization.

2111312412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57384 (or 57376 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 2111312412 is about 45949.0197066270. The cubic root of 2111312412 is about 1282.8744831665.

Adding to 2111312412 its reverse (2142131112), we get a palindrome (4253443524).

The spelling of 2111312412 in words is "two billion, one hundred eleven million, three hundred twelve thousand, four hundred twelve".