1213212213322 has 4 divisors (see below), whose sum is σ = 1819818319986. Its totient is φ = 606606106660.

The previous prime is 1213212213293. The next prime is 1213212213379. The reversal of 1213212213322 is 2233122123121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 896163262281 + 317048951041 = 946659^2 + 563071^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303303053329 + ... + 303303053332.

Almost surely, 2^{1213212213322} is an apocalyptic number.

1213212213322 is a deficient number, since it is larger than the sum of its proper divisors (606606106664).

1213212213322 is an equidigital number, since it uses as much as digits as its factorization.

1213212213322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606606106663.

The product of its digits is 1728, while the sum is 25.

Adding to 1213212213322 its reverse (2233122123121), we get a palindrome (3446334336443).

The spelling of 1213212213322 in words is "one trillion, two hundred thirteen billion, two hundred twelve million, two hundred thirteen thousand, three hundred twenty-two".