2122110121212 has 96 divisors (see below), whose sum is σ = 5778994959360. Its totient is φ = 672133809600.

The previous prime is 2122110121177. The next prime is 2122110121223. The reversal of 2122110121212 is 2121210112212.

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

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, 2453763 + ... + 3203930.

It is an arithmetic number, because the mean of its divisors is an integer number (60197864160).

Almost surely, 2^{2122110121212} is an apocalyptic number.

It is an amenable number.

2122110121212 is an abundant number, since it is smaller than the sum of its proper divisors (3656884838148).

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

2122110121212 is a wasteful number, since it uses less digits than its factorization.

2122110121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657880 (or 5657872 counting only the distinct ones).

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

Adding to 2122110121212 its reverse (2121210112212), we get a palindrome (4243320233424).

The spelling of 2122110121212 in words is "two trillion, one hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, two hundred twelve".