211243012112 has 80 divisors (see below), whose sum is σ = 473783675904. Its totient is φ = 90174720000.

The previous prime is 211243012109. The next prime is 211243012117. The reversal of 211243012112 is 211210342112.

It is a super-2 number, since 2×211243012112² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211243012117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1302737 + ... + 1455887.

Almost surely, 2^211243012112 is an apocalyptic number.

211243012112 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 211243012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236891837952).

211243012112 is an abundant number, since it is smaller than the sum of its proper divisors (262540663792).

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

211243012112 is a wasteful number, since it uses less digits than its factorization.

211243012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153648 (or 153642 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211243012112 its reverse (211210342112), we get a palindrome (422453354224).

The spelling of 211243012112 in words is "two hundred eleven billion, two hundred forty-three million, twelve thousand, one hundred twelve".