2120112221112 has 40 divisors (see below), whose sum is σ = 5938277287800. Its totient is φ = 706704073488.

The previous prime is 2120112221107. The next prime is 2120112221113. The reversal of 2120112221112 is 2111222110212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120112221113) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1635888412 + ... + 1635889707.

It is an arithmetic number, because the mean of its divisors is an integer number (148456932195).

Almost surely, 2^{2120112221112} is an apocalyptic number.

It is an amenable number.

2120112221112 is an abundant number, since it is smaller than the sum of its proper divisors (3818165066688).

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

2120112221112 is a wasteful number, since it uses less digits than its factorization.

2120112221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271778137 (or 3271778124 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2120112221112 its reverse (2111222110212), we get a palindrome (4231334331324).

The spelling of 2120112221112 in words is "two trillion, one hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twelve".