221000201100111 has 16 divisors (see below), whose sum is σ = 318081248962560. Its totient is φ = 136068089831520.

The previous prime is 221000201100073. The next prime is 221000201100113. The reversal of 221000201100111 is 111001102000122.

It is not a de Polignac number, because 221000201100111 - 2¹⁵ = 221000201067343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000201100113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55222437055 + ... + 55222441056.

It is an arithmetic number, because the mean of its divisors is an integer number (19880078060160).

Almost surely, 2^{221000201100111} is an apocalyptic number.

221000201100111 is a deficient number, since it is larger than the sum of its proper divisors (97081047862449).

221000201100111 is a wasteful number, since it uses less digits than its factorization.

221000201100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110444878166.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221000201100111 its reverse (111001102000122), we get a palindrome (332001303100233).

The spelling of 221000201100111 in words is "two hundred twenty-one trillion, two hundred one million, one hundred thousand, one hundred eleven".