212111210011112 has 16 divisors (see below), whose sum is σ = 397710381464100. Its totient is φ = 106055108287360.

The previous prime is 212111210011111. The next prime is 212111210011229. The reversal of 212111210011112 is 211110012111212.

It can be written as a sum of positive squares in 2 ways, for example, as 152526797830276 + 59584412180836 = 12350174^2 + 7719094^2 .

It is not an unprimeable number, because it can be changed into a prime (212111210011111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60271787 + ... + 63693882.

Almost surely, 2^{212111210011112} is an apocalyptic number.

It is an amenable number.

212111210011112 is a deficient number, since it is larger than the sum of its proper divisors (185599171452988).

212111210011112 is a wasteful number, since it uses less digits than its factorization.

212111210011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124179556 (or 124179552 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212111210011112 its reverse (211110012111212), we get a palindrome (423221222122324).

The spelling of 212111210011112 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred ten million, eleven thousand, one hundred twelve".