2121022112112 has 30 divisors (see below), whose sum is σ = 5935916050272. Its totient is φ = 707007370656.

The previous prime is 2121022112093. The next prime is 2121022112119. The reversal of 2121022112112 is 2112112201212.

2121022112112 is a `hidden beast` number, since 21 + 210 + 221 + 1 + 211 + 2 = 666.

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 (2121022112119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7364659968 + ... + 7364660255.

Almost surely, 2^{2121022112112} is an apocalyptic number.

It is an amenable number.

2121022112112 is an abundant number, since it is smaller than the sum of its proper divisors (3814893938160).

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

2121022112112 is a wasteful number, since it uses less digits than its factorization.

2121022112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14729320237 (or 14729320228 counting only the distinct ones).

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

Adding to 2121022112112 its reverse (2112112201212), we get a palindrome (4233134313324).

The spelling of 2121022112112 in words is "two trillion, one hundred twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred twelve".