20212211312112 has 160 divisors (see below), whose sum is σ = 52998857856000. Its totient is φ = 6636919209984.

The previous prime is 20212211312107. The next prime is 20212211312129. The reversal of 20212211312112 is 21121311221202.

It is a super-2 number, since 2×20212211312112² (a number of 27 digits) contains 22 as substring.

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, 4347644764 + ... + 4347649412.

It is an arithmetic number, because the mean of its divisors is an integer number (331242861600).

Almost surely, 2^{20212211312112} 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 20212211312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26499428928000).

20212211312112 is an abundant number, since it is smaller than the sum of its proper divisors (32786646543888).

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

20212211312112 is a wasteful number, since it uses less digits than its factorization.

20212211312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8903 (or 8897 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 20212211312112 its reverse (21121311221202), we get a palindrome (41333522533314).

It can be divided in two parts, 2021221 and 1312112, that added together give a palindrome (3333333).

The spelling of 20212211312112 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, three hundred twelve thousand, one hundred twelve".