2213121322 has 4 divisors (see below), whose sum is σ = 3319681986. Its totient is φ = 1106560660.

The previous prime is 2213121307. The next prime is 2213121359. The reversal of 2213121322 is 2231213122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2231213122 = 2 ⋅1115606561.

It can be written as a sum of positive squares in only one way, i.e., 1842212241 + 370909081 = 42921^2 + 19259^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2213121322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553280329 + ... + 553280332.

Almost surely, 2^2213121322 is an apocalyptic number.

2213121322 is a deficient number, since it is larger than the sum of its proper divisors (1106560664).

2213121322 is a wasteful number, since it uses less digits than its factorization.

2213121322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106560663.

The product of its digits is 288, while the sum is 19.

The square root of 2213121322 is about 47043.8234202961. The cubic root of 2213121322 is about 1303.1720019446.

Adding to 2213121322 its reverse (2231213122), we get a palindrome (4444334444).

The spelling of 2213121322 in words is "two billion, two hundred thirteen million, one hundred twenty-one thousand, three hundred twenty-two".