221110220011 has 4 divisors (see below), whose sum is σ = 221743774000. Its totient is φ = 220476666024.

The previous prime is 221110220003. The next prime is 221110220069. The reversal of 221110220011 is 110022011122.

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 221110220011 - 2³ = 221110220003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221110219973 and 221110220000.

It is not an unprimeable number, because it can be changed into a prime (221110220311) 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, 316776471 + ... + 316777168.

It is an arithmetic number, because the mean of its divisors is an integer number (55435943500).

Almost surely, 2^221110220011 is an apocalyptic number.

221110220011 is a deficient number, since it is larger than the sum of its proper divisors (633553989).

221110220011 is an equidigital number, since it uses as much as digits as its factorization.

221110220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633553988.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221110220011 its reverse (110022011122), we get a palindrome (331132231133).

The spelling of 221110220011 in words is "two hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, eleven".