221311341312 has 72 divisors (see below), whose sum is σ = 593507449920. Its totient is φ = 73207280640.

The previous prime is 221311341301. The next prime is 221311341341. The reversal of 221311341312 is 213143113122.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999262 + ... + 1200477.

Almost surely, 2^221311341312 is an apocalyptic number.

It is an amenable number.

221311341312 is an abundant number, since it is smaller than the sum of its proper divisors (372196108608).

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

221311341312 is a wasteful number, since it uses less digits than its factorization.

221311341312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199889 (or 2199875 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 221311341312 its reverse (213143113122), we get a palindrome (434454454434).

The spelling of 221311341312 in words is "two hundred twenty-one billion, three hundred eleven million, three hundred forty-one thousand, three hundred twelve".