221103401312 has 12 divisors (see below), whose sum is σ = 435297321396. Its totient is φ = 110551700640.

The previous prime is 221103401263. The next prime is 221103401329. The reversal of 221103401312 is 213104301122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454740614 + ... + 3454740677.

It is an arithmetic number, because the mean of its divisors is an integer number (36274776783).

Almost surely, 2^221103401312 is an apocalyptic number.

It is an amenable number.

221103401312 is a deficient number, since it is larger than the sum of its proper divisors (214193920084).

221103401312 is an equidigital number, since it uses as much as digits as its factorization.

221103401312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909481301 (or 6909481293 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221103401312 its reverse (213104301122), we get a palindrome (434207702434).

The spelling of 221103401312 in words is "two hundred twenty-one billion, one hundred three million, four hundred one thousand, three hundred twelve".