213421221222 has 32 divisors (see below), whose sum is σ = 465817322880. Its totient is φ = 64649344320.

The previous prime is 213421221163. The next prime is 213421221227. The reversal of 213421221222 is 222122124312.

213421221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213421221192 and 213421221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213421221227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412348 + ... + 772575.

It is an arithmetic number, because the mean of its divisors is an integer number (14556791340).

Almost surely, 2^213421221222 is an apocalyptic number.

213421221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213421221222 is an abundant number, since it is smaller than the sum of its proper divisors (252396101658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213421221222 is a wasteful number, since it uses less digits than its factorization.

213421221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187668.

The product of its digits is 1536, while the sum is 24.

Adding to 213421221222 its reverse (222122124312), we get a palindrome (435543345534).

It can be divided in two parts, 21 and 3421221222, that added together give a palindrome (3421221243).

The spelling of 213421221222 in words is "two hundred thirteen billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".