212122201312112 has 160 divisors (see below), whose sum is σ = 532475494387200. Its totient is φ = 79496383785984.

The previous prime is 212122201312061. The next prime is 212122201312157. The reversal of 212122201312112 is 211213102221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692470439 + ... + 692776697.

It is an arithmetic number, because the mean of its divisors is an integer number (3327971839920).

Almost surely, 2^{212122201312112} 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 212122201312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266237747193600).

212122201312112 is an abundant number, since it is smaller than the sum of its proper divisors (320353293075088).

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

212122201312112 is a wasteful number, since it uses less digits than its factorization.

212122201312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331343 (or 331337 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 212122201312112 its reverse (211213102221212), we get a palindrome (423335303533324).

The spelling of 212122201312112 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred one million, three hundred twelve thousand, one hundred twelve".