211143212412 has 96 divisors (see below), whose sum is σ = 557319571200. Its totient is φ = 61628582400.

The previous prime is 211143212411. The next prime is 211143212431. The reversal of 211143212412 is 214212341112.

It is a super-2 number, since 2×211143212412² (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 (211143212411) 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, 1538112 + ... + 1669752.

It is an arithmetic number, because the mean of its divisors is an integer number (5805412200).

Almost surely, 2^211143212412 is an apocalyptic number.

211143212412 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 211143212412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278659785600).

211143212412 is an abundant number, since it is smaller than the sum of its proper divisors (346176358788).

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

211143212412 is a wasteful number, since it uses less digits than its factorization.

211143212412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132107 (or 132105 counting only the distinct ones).

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

Adding to 211143212412 its reverse (214212341112), we get a palindrome (425355553524).

The spelling of 211143212412 in words is "two hundred eleven billion, one hundred forty-three million, two hundred twelve thousand, four hundred twelve".