211212100112 has 80 divisors (see below), whose sum is σ = 459423928320. Its totient is φ = 93403584000.

The previous prime is 211212100103. The next prime is 211212100139. The reversal of 211212100112 is 211001212112.

It is a super-2 number, since 2×211212100112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489089 + ... + 813407.

It is an arithmetic number, because the mean of its divisors is an integer number (5742799104).

Almost surely, 2^211212100112 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 211212100112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229711964160).

211212100112 is an abundant number, since it is smaller than the sum of its proper divisors (248211828208).

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

211212100112 is a wasteful number, since it uses less digits than its factorization.

211212100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324472 (or 324466 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211212100112 its reverse (211001212112), we get a palindrome (422213312224).

The spelling of 211212100112 in words is "two hundred eleven billion, two hundred twelve million, one hundred thousand, one hundred twelve".