221351414312 has 32 divisors (see below), whose sum is σ = 477066240000. Its totient is φ = 94316535744.

The previous prime is 221351414299. The next prime is 221351414329. The reversal of 221351414312 is 213414153122.

It is a happy number.

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, 11414312 + ... + 11433687.

It is an arithmetic number, because the mean of its divisors is an integer number (14908320000).

Almost surely, 2^221351414312 is an apocalyptic number.

It is an amenable number.

221351414312 is an abundant number, since it is smaller than the sum of its proper divisors (255714825688).

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

221351414312 is a wasteful number, since it uses less digits than its factorization.

221351414312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22848185 (or 22848181 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

Adding to 221351414312 its reverse (213414153122), we get a palindrome (434765567434).

The spelling of 221351414312 in words is "two hundred twenty-one billion, three hundred fifty-one million, four hundred fourteen thousand, three hundred twelve".