2122213122 has 60 divisors (see below), whose sum is σ = 5051620530. Its totient is φ = 665777664.

The previous prime is 2122213087. The next prime is 2122213123. The reversal of 2122213122 is 2213122212.

It can be written as a sum of positive squares in 3 ways, for example, as 2115908001 + 6305121 = 45999^2 + 2511^2 .

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 = 2122213095 and 2122213104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122213123) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 24154 + ... + 69482.

Almost surely, 2^2122213122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122213122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2525810265).

2122213122 is an abundant number, since it is smaller than the sum of its proper divisors (2929407408).

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

2122213122 is a wasteful number, since it uses less digits than its factorization.

2122213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45377 (or 45351 counting only the distinct ones).

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

The square root of 2122213122 is about 46067.4844331661. The cubic root of 2122213122 is about 1285.0785221539.

Adding to 2122213122 its reverse (2213122212), we get a palindrome (4335335334).

The spelling of 2122213122 in words is "two billion, one hundred twenty-two million, two hundred thirteen thousand, one hundred twenty-two".