2122121244 has 24 divisors (see below), whose sum is σ = 5111346688. Its totient is φ = 684555120.

The previous prime is 2122121227. The next prime is 2122121279. The reversal of 2122121244 is 4421212212.

It is a super-2 number, since 2×2122121244² = 9006797148472215072, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2122121244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2851942 + ... + 2852685.

Almost surely, 2^2122121244 is an apocalyptic number.

It is an amenable number.

2122121244 is an abundant number, since it is smaller than the sum of its proper divisors (2989225444).

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

2122121244 is a wasteful number, since it uses less digits than its factorization.

2122121244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704665 (or 5704663 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 2122121244 is about 46066.4872114208. The cubic root of 2122121244 is about 1285.0599767107.

Adding to 2122121244 its reverse (4421212212), we get a palindrome (6543333456).

The spelling of 2122121244 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-four".