221000000011 has 8 divisors (see below), whose sum is σ = 253207631840. Its totient is φ = 188951419008.

The previous prime is 220999999999. The next prime is 221000000063. The reversal of 221000000011 is 110000000122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221000000011 - 2¹³ = 220999991819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220999999940 and 221000000003.

It is not an unprimeable number, because it can be changed into a prime (221000000071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39759726 + ... + 39765283.

It is an arithmetic number, because the mean of its divisors is an integer number (31650953980).

Almost surely, 2^221000000011 is an apocalyptic number.

221000000011 is a deficient number, since it is larger than the sum of its proper divisors (32207631829).

221000000011 is an equidigital number, since it uses as much as digits as its factorization.

221000000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79525413.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 221000000011 its reverse (110000000122), we get a palindrome (331000000133).

The spelling of 221000000011 in words is "two hundred twenty-one billion, eleven", and thus it is an aban number.