221110220222011 has 4 divisors (see below), whose sum is σ = 221112901825992. Its totient is φ = 221107538618032.

The previous prime is 221110220221991. The next prime is 221110220222029. The reversal of 221110220222011 is 110222022011122.

221110220222011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221110220222011 - 2¹⁹ = 221110219697723 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 221110220222011.

It is not an unprimeable number, because it can be changed into a prime (221110220222611) 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, 1340678305 + ... + 1340843218.

It is an arithmetic number, because the mean of its divisors is an integer number (55278225456498).

Almost surely, 2^{221110220222011} is an apocalyptic number.

221110220222011 is a deficient number, since it is larger than the sum of its proper divisors (2681603981).

221110220222011 is an equidigital number, since it uses as much as digits as its factorization.

221110220222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681603980.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221110220222011 its reverse (110222022011122), we get a palindrome (331332242233133).

The spelling of 221110220222011 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred twenty million, two hundred twenty-two thousand, eleven".