221321231111330 has 32 divisors (see below), whose sum is σ = 455323209479424. Its totient is φ = 75875928325056.

The previous prime is 221321231111327. The next prime is 221321231111389. The reversal of 221321231111330 is 33111132123122.

It is a self number, because there is not a number n which added to its sum of digits gives 221321231111330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116480597 + ... + 118365416.

It is an arithmetic number, because the mean of its divisors is an integer number (14228850296232).

Almost surely, 2^{221321231111330} is an apocalyptic number.

221321231111330 is an abundant number, since it is smaller than the sum of its proper divisors (234001978368094).

221321231111330 is a wasteful number, since it uses less digits than its factorization.

221321231111330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234859490.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 221321231111330 its reverse (33111132123122), we get a palindrome (254432363234452).

The spelling of 221321231111330 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, one hundred eleven thousand, three hundred thirty".