212231321321122 has 4 divisors (see below), whose sum is σ = 318346981981686. Its totient is φ = 106115660660560.

The previous prime is 212231321321113. The next prime is 212231321321177. The reversal of 212231321321122 is 221123123132212.

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., 166097734427881 + 46133586893241 = 12887891^2 + 6792171^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53057830330279 + ... + 53057830330282.

Almost surely, 2^{212231321321122} is an apocalyptic number.

212231321321122 is a deficient number, since it is larger than the sum of its proper divisors (106115660660564).

212231321321122 is a wasteful number, since it uses less digits than its factorization.

212231321321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106115660660563.

The product of its digits is 3456, while the sum is 28.

Adding to 212231321321122 its reverse (221123123132212), we get a palindrome (433354444453334).

The spelling of 212231321321122 in words is "two hundred twelve trillion, two hundred thirty-one billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-two".