212322121210 has 16 divisors (see below), whose sum is σ = 382190490792. Its totient is φ = 84926476800.

The previous prime is 212322121201. The next prime is 212322121273. The reversal of 212322121210 is 12121223212.

It can be written as a sum of positive squares in 4 ways, for example, as 209078477001 + 3243644209 = 457251^2 + 56953^2 .

It is a super-2 number, since 2×212322121210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105490 + ... + 660130.

Almost surely, 2^212322121210 is an apocalyptic number.

212322121210 is a deficient number, since it is larger than the sum of its proper divisors (169868369582).

212322121210 is a wasteful number, since it uses less digits than its factorization.

212322121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592929.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212322121210 its reverse (12121223212), we get a palindrome (224443344422).

The spelling of 212322121210 in words is "two hundred twelve billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".