2122121222112 has 48 divisors (see below), whose sum is σ = 5619865300560. Its totient is φ = 701113792512.

The previous prime is 2122121222099. The next prime is 2122121222119. The reversal of 2122121222112 is 2112221212212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122121222119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97800787 + ... + 97822482.

It is an arithmetic number, because the mean of its divisors is an integer number (117080527095).

Almost surely, 2^{2122121222112} is an apocalyptic number.

It is an amenable number.

2122121222112 is an abundant number, since it is smaller than the sum of its proper divisors (3497744078448).

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

2122121222112 is a wasteful number, since it uses less digits than its factorization.

2122121222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195623395 (or 195623387 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 2122121222112 its reverse (2112221212212), we get a palindrome (4234342434324).

The spelling of 2122121222112 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".