221311121343132 has 48 divisors (see below), whose sum is σ = 516952428204800. Its totient is φ = 73690436510208.

The previous prime is 221311121343107. The next prime is 221311121343133. The reversal of 221311121343132 is 231343121113122.

It is a super-2 number, since 2×221311121343132² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 221311121343132.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47219244 + ... + 51694092.

Almost surely, 2^{221311121343132} is an apocalyptic number.

It is an amenable number.

221311121343132 is an abundant number, since it is smaller than the sum of its proper divisors (295641306861668).

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

221311121343132 is a wasteful number, since it uses less digits than its factorization.

221311121343132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479322 (or 4479320 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

Adding to 221311121343132 its reverse (231343121113122), we get a palindrome (452654242456254).

The spelling of 221311121343132 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-two".