12212621222 has 32 divisors (see below), whose sum is σ = 19477501920. Its totient is φ = 5726730240.

The previous prime is 12212621149. The next prime is 12212621227. The reversal of 12212621222 is 22212621221.

It is a super-2 number, since 2×12212621222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212621227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5671298 + ... + 5673450.

It is an arithmetic number, because the mean of its divisors is an integer number (608671935).

Almost surely, 2^12212621222 is an apocalyptic number.

12212621222 is a deficient number, since it is larger than the sum of its proper divisors (7264880698).

12212621222 is a wasteful number, since it uses less digits than its factorization.

12212621222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608.

The product of its digits is 768, while the sum is 23.

Subtracting 12212621222 from its reverse (22212621221), we obtain a palindrome (9999999999).

The spelling of 12212621222 in words is "twelve billion, two hundred twelve million, six hundred twenty-one thousand, two hundred twenty-two".