221311121343134 has 16 divisors (see below), whose sum is σ = 332096171563728. Its totient is φ = 110612398858752.

The previous prime is 221311121343133. The next prime is 221311121343149. The reversal of 221311121343134 is 431343121113122.

It is a happy number.

It is a super-2 number, since 2×221311121343134² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221311121343134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311121343133) 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 7 ways as a sum of consecutive naturals, for example, 359411582 + ... + 360026814.

It is an arithmetic number, because the mean of its divisors is an integer number (20756010722733).

Almost surely, 2^{221311121343134} is an apocalyptic number.

221311121343134 is a deficient number, since it is larger than the sum of its proper divisors (110785050220594).

221311121343134 is a wasteful number, since it uses less digits than its factorization.

221311121343134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685099.

The product of its digits is 10368, while the sum is 32.

Adding to 221311121343134 its reverse (431343121113122), we get a palindrome (652654242456256).

The spelling of 221311121343134 in words is "two hundred twenty-one trillion, three hundred eleven billion, one hundred twenty-one million, three hundred forty-three thousand, one hundred thirty-four".