2221221122 has 8 divisors (see below), whose sum is σ = 3527821836. Its totient is φ = 1045280512.

The previous prime is 2221221103. The next prime is 2221221127. The reversal of 2221221122 is 2211221222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2107819921 + 113401201 = 45911^2 + 10649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 2221221122.

It is not an unprimeable number, because it can be changed into a prime (2221221127) 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, 32664983 + ... + 32665050.

Almost surely, 2^2221221122 is an apocalyptic number.

2221221122 is a deficient number, since it is larger than the sum of its proper divisors (1306600714).

2221221122 is a wasteful number, since it uses less digits than its factorization.

2221221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65330052.

The product of its digits is 128, while the sum is 17.

The square root of 2221221122 is about 47129.8326116272. The cubic root of 2221221122 is about 1304.7598922128.

Adding to 2221221122 its reverse (2211221222), we get a palindrome (4432442344).

It can be divided in two parts, 22212 and 21122, that added together give a palindrome (43334).

The spelling of 2221221122 in words is "two billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".