221200222202011 has 4 divisors (see below), whose sum is σ = 238215623909872. Its totient is φ = 204184820494152.

The previous prime is 221200222201993. The next prime is 221200222202023. The reversal of 221200222202011 is 110202222002122.

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 221200222202011 - 2⁷ = 221200222201883 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 221200222202011.

It is not an unprimeable number, because it can be changed into a prime (221200222202041) 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, 8507700853911 + ... + 8507700853936.

It is an arithmetic number, because the mean of its divisors is an integer number (59553905977468).

Almost surely, 2^{221200222202011} is an apocalyptic number.

221200222202011 is a deficient number, since it is larger than the sum of its proper divisors (17015401707861).

221200222202011 is a wasteful number, since it uses less digits than its factorization.

221200222202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17015401707860.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221200222202011 its reverse (110202222002122), we get a palindrome (331402444204133).

The spelling of 221200222202011 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twenty-two million, two hundred two thousand, eleven".