221332132344312 has 48 divisors (see below), whose sum is σ = 653935845565080. Its totient is φ = 67070343134400.

The previous prime is 221332132344283. The next prime is 221332132344341. The reversal of 221332132344312 is 213443231233122.

It is a happy number.

221332132344312 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 3 + 213 + 2 + 3 + 4 + 431 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (221332132344283) and next prime (221332132344341).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139729880739 + ... + 139729882322.

Almost surely, 2^{221332132344312} is an apocalyptic number.

221332132344312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221332132344312 is an abundant number, since it is smaller than the sum of its proper divisors (432603713220768).

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

221332132344312 is a wasteful number, since it uses less digits than its factorization.

221332132344312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279459763084 (or 279459763077 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

Adding to 221332132344312 its reverse (213443231233122), we get a palindrome (434775363577434).

The spelling of 221332132344312 in words is "two hundred twenty-one trillion, three hundred thirty-two billion, one hundred thirty-two million, three hundred forty-four thousand, three hundred twelve".