221120201020111 has 2 divisors, whose sum is σ = 221120201020112. Its totient is φ = 221120201020110.

The previous prime is 221120201020087. The next prime is 221120201020133. The reversal of 221120201020111 is 111020102021122.

221120201020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221120201020111 - 2¹⁹ = 221120200495823 is a prime.

It is a super-3 number, since 3×221120201020111³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221120201020181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560100510055 + 110560100510056.

It is an arithmetic number, because the mean of its divisors is an integer number (110560100510056).

Almost surely, 2^{221120201020111} is an apocalyptic number.

221120201020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120201020111 is an equidigital number, since it uses as much as digits as its factorization.

221120201020111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221120201020111 its reverse (111020102021122), we get a palindrome (332140303041233).

The spelling of 221120201020111 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred one million, twenty thousand, one hundred eleven".