221130320011 has 4 divisors (see below), whose sum is σ = 234137985912. Its totient is φ = 208122654112.

The previous prime is 221130319987. The next prime is 221130320023. The reversal of 221130320011 is 110023031122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221130320011 - 2²³ = 221121931403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221130320711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503832925 + ... + 6503832958.

It is an arithmetic number, because the mean of its divisors is an integer number (58534496478).

Almost surely, 2^221130320011 is an apocalyptic number.

221130320011 is a deficient number, since it is larger than the sum of its proper divisors (13007665901).

221130320011 is a wasteful number, since it uses less digits than its factorization.

221130320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13007665900.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221130320011 its reverse (110023031122), we get a palindrome (331153351133).

The spelling of 221130320011 in words is "two hundred twenty-one billion, one hundred thirty million, three hundred twenty thousand, eleven".