2122221144 has 16 divisors (see below), whose sum is σ = 5305552920. Its totient is φ = 707407040.

The previous prime is 2122221139. The next prime is 2122221149. The reversal of 2122221144 is 4411222212.

It is an interprime number because it is at equal distance from previous prime (2122221139) and next prime (2122221149).

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 2122221144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122221149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44212917 + ... + 44212964.

Almost surely, 2^2122221144 is an apocalyptic number.

2122221144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2122221144 is an abundant number, since it is smaller than the sum of its proper divisors (3183331776).

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

2122221144 is a wasteful number, since it uses less digits than its factorization.

2122221144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88425890 (or 88425886 counting only the distinct ones).

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

The square root of 2122221144 is about 46067.5715010027. The cubic root of 2122221144 is about 1285.0801413577.

Adding to 2122221144 its reverse (4411222212), we get a palindrome (6533443356).

The spelling of 2122221144 in words is "two billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred forty-four".