213121331321222 has 8 divisors (see below), whose sum is σ = 319780269969456. Its totient is φ = 106527907998072.

The previous prime is 213121331321113. The next prime is 213121331321281. The reversal of 213121331321222 is 222123133121312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213121331321222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16378823138 + ... + 16378836149.

It is an arithmetic number, because the mean of its divisors is an integer number (39972533746182).

Almost surely, 2^{213121331321222} is an apocalyptic number.

213121331321222 is a deficient number, since it is larger than the sum of its proper divisors (106658938648234).

213121331321222 is a wasteful number, since it uses less digits than its factorization.

213121331321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32757662542.

The product of its digits is 5184, while the sum is 29.

Adding to 213121331321222 its reverse (222123133121312), we get a palindrome (435244464442534).

The spelling of 213121331321222 in words is "two hundred thirteen trillion, one hundred twenty-one billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred twenty-two".