221110222121011 has 4 divisors (see below), whose sum is σ = 221110436178112. Its totient is φ = 221110008063912.

The previous prime is 221110222120999. The next prime is 221110222121017. The reversal of 221110222121011 is 110121222011122.

It is a happy number.

221110222121011 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 221110222121011 - 2⁵ = 221110222120979 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 221110222121011.

It is not an unprimeable number, because it can be changed into a prime (221110222121017) 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, 105471576 + ... + 107547541.

It is an arithmetic number, because the mean of its divisors is an integer number (55277609044528).

Almost surely, 2^{221110222121011} is an apocalyptic number.

221110222121011 is a deficient number, since it is larger than the sum of its proper divisors (214057101).

221110222121011 is a wasteful number, since it uses less digits than its factorization.

221110222121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214057100.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221110222121011 its reverse (110121222011122), we get a palindrome (331231444132133).

The spelling of 221110222121011 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, eleven".