1212213321122 has 4 divisors (see below), whose sum is σ = 1818319981686. Its totient is φ = 606106660560.

The previous prime is 1212213321119. The next prime is 1212213321131. The reversal of 1212213321122 is 2211233122121.

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., 1204591856521 + 7621464601 = 1097539^2 + 87301^2 .

It is a super-2 number, since 2×1212213321122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303053330279 + ... + 303053330282.

Almost surely, 2^{1212213321122} is an apocalyptic number.

1212213321122 is a deficient number, since it is larger than the sum of its proper divisors (606106660564).

1212213321122 is an equidigital number, since it uses as much as digits as its factorization.

1212213321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606106660563.

The product of its digits is 576, while the sum is 23.

Adding to 1212213321122 its reverse (2211233122121), we get a palindrome (3423446443243).

The spelling of 1212213321122 in words is "one trillion, two hundred twelve billion, two hundred thirteen million, three hundred twenty-one thousand, one hundred twenty-two".