2122121322 has 64 divisors (see below), whose sum is σ = 5077987200. Its totient is φ = 654462720.

The previous prime is 2122121321. The next prime is 2122121387. The reversal of 2122121322 is 2231212212.

2122121322 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 = 2122121295 and 2122121304.

It is not an unprimeable number, because it can be changed into a prime (2122121321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34572 + ... + 73752.

It is an arithmetic number, because the mean of its divisors is an integer number (79343550).

Almost surely, 2^2122121322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122121322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538993600).

2122121322 is an abundant number, since it is smaller than the sum of its proper divisors (2955865878).

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

2122121322 is a wasteful number, since it uses less digits than its factorization.

2122121322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39268 (or 39262 counting only the distinct ones).

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

The square root of 2122121322 is about 46066.4880580233. The cubic root of 2122121322 is about 1285.0599924552.

Adding to 2122121322 its reverse (2231212212), we get a palindrome (4353333534).

The spelling of 2122121322 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty-two".