221200100112011 has 2 divisors, whose sum is σ = 221200100112012. Its totient is φ = 221200100112010.

The previous prime is 221200100112007. The next prime is 221200100112023. The reversal of 221200100112011 is 110211001002122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221200100112011 - 2² = 221200100112007 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (221200100112811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600050056005 + 110600050056006.

It is an arithmetic number, because the mean of its divisors is an integer number (110600050056006).

Almost surely, 2^{221200100112011} is an apocalyptic number.

221200100112011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200100112011 is an equidigital number, since it uses as much as digits as its factorization.

221200100112011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221200100112011 its reverse (110211001002122), we get a palindrome (331411101114133).

The spelling of 221200100112011 in words is "two hundred twenty-one trillion, two hundred billion, one hundred million, one hundred twelve thousand, eleven".