221231000011 has 16 divisors (see below), whose sum is σ = 258994137600. Its totient is φ = 185017045248.

The previous prime is 221230999999. The next prime is 221231000051. The reversal of 221231000011 is 110000132122.

It is not a de Polignac number, because 221231000011 - 2⁹ = 221230999499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221230999955 and 221231000000.

It is not an unprimeable number, because it can be changed into a prime (221231000051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115951 + ... + 675208.

It is an arithmetic number, because the mean of its divisors is an integer number (16187133600).

Almost surely, 2^221231000011 is an apocalyptic number.

221231000011 is a deficient number, since it is larger than the sum of its proper divisors (37763137589).

221231000011 is an equidigital number, since it uses as much as digits as its factorization.

221231000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792138.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 221231000011 its reverse (110000132122), we get a palindrome (331231132133).

The spelling of 221231000011 in words is "two hundred twenty-one billion, two hundred thirty-one million, eleven", and thus it is an aban number.