221011010011 has 4 divisors (see below), whose sum is σ = 241102920024. Its totient is φ = 200919100000.

The previous prime is 221011009993. The next prime is 221011010039. The reversal of 221011010011 is 110010110122.

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 221011010011 - 2⁵ = 221011009979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221011010011.

It is not an unprimeable number, because it can be changed into a prime (221011010041) 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, 10045954990 + ... + 10045955011.

It is an arithmetic number, because the mean of its divisors is an integer number (60275730006).

Almost surely, 2^221011010011 is an apocalyptic number.

221011010011 is a deficient number, since it is larger than the sum of its proper divisors (20091910013).

221011010011 is a wasteful number, since it uses less digits than its factorization.

221011010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20091910012.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 221011010011 its reverse (110010110122), we get a palindrome (331021120133).

The spelling of 221011010011 in words is "two hundred twenty-one billion, eleven million, ten thousand, eleven".