2121244244 has 24 divisors (see below), whose sum is σ = 4245171840. Its totient is φ = 908529696.

The previous prime is 2121244217. The next prime is 2121244271. The reversal of 2121244244 is 4424421212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121244217) and next prime (2121244271).

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

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, 22697 + ... + 68975.

It is an arithmetic number, because the mean of its divisors is an integer number (176882160).

Almost surely, 2^2121244244 is an apocalyptic number.

It is an amenable number.

2121244244 is an abundant number, since it is smaller than the sum of its proper divisors (2123927596).

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

2121244244 is a wasteful number, since it uses less digits than its factorization.

2121244244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47927 (or 47925 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

The square root of 2121244244 is about 46056.9673773686. The cubic root of 2121244244 is about 1284.8829285664.

Adding to 2121244244 its reverse (4424421212), we get a palindrome (6545665456).

It can be divided in two parts, 21212 and 44244, that added together give a palindrome (65456).

The spelling of 2121244244 in words is "two billion, one hundred twenty-one million, two hundred forty-four thousand, two hundred forty-four".