212111020121112 has 48 divisors (see below), whose sum is σ = 656534109900240. Its totient is φ = 60603148605888.

The previous prime is 212111020121083. The next prime is 212111020121129. The reversal of 212111020121112 is 211121020111212.

It is a happy number.

212111020121112 is a `hidden beast` number, since 21 + 211 + 10 + 201 + 211 + 12 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210427598823 + ... + 210427599830.

It is an arithmetic number, because the mean of its divisors is an integer number (13677793956255).

Almost surely, 2^{212111020121112} is an apocalyptic number.

It is an amenable number.

212111020121112 is an abundant number, since it is smaller than the sum of its proper divisors (444423089779128).

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

212111020121112 is a wasteful number, since it uses less digits than its factorization.

212111020121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420855198672 (or 420855198665 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212111020121112 its reverse (211121020111212), we get a palindrome (423232040232324).

The spelling of 212111020121112 in words is "two hundred twelve trillion, one hundred eleven billion, twenty million, one hundred twenty-one thousand, one hundred twelve".