2123221122 has 36 divisors (see below), whose sum is σ = 5056546950. Its totient is φ = 643399680.

The previous prime is 2123221097. The next prime is 2123221123. The reversal of 2123221122 is 2211223212.

It can be written as a sum of positive squares in only one way, i.e., 1207493001 + 915728121 = 34749^2 + 30261^2 .

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

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

It is a junction number, because it is equal to n+sod(n) for n = 2123221095 and 2123221104.

It is not an unprimeable number, because it can be changed into a prime (2123221123) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 485247 + ... + 489602.

Almost surely, 2^2123221122 is an apocalyptic number.

2123221122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123221122 is an abundant number, since it is smaller than the sum of its proper divisors (2933325828).

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

2123221122 is a wasteful number, since it uses less digits than its factorization.

2123221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974879 (or 974865 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2123221122 is about 46078.4236058483. The cubic root of 2123221122 is about 1285.2819503743.

Adding to 2123221122 its reverse (2211223212), we get a palindrome (4334444334).

It can be divided in two parts, 212322 and 1122, that added together give a square (213444 = 462²).

The spelling of 2123221122 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-two".