212120211221112 has 32 divisors (see below), whose sum is σ = 532413279175680. Its totient is φ = 70425036924000.

The previous prime is 212120211221101. The next prime is 212120211221147. The reversal of 212120211221112 is 211122112021212.

212120211221112 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17606253208 + ... + 17606265255.

It is an arithmetic number, because the mean of its divisors is an integer number (16637914974240).

Almost surely, 2^{212120211221112} is an apocalyptic number.

It is an amenable number.

212120211221112 is an abundant number, since it is smaller than the sum of its proper divisors (320293067954568).

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

212120211221112 is a wasteful number, since it uses less digits than its factorization.

212120211221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35212518723 (or 35212518719 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212120211221112 its reverse (211122112021212), we get a palindrome (423242323242324).

The spelling of 212120211221112 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twelve".