221201020112111 has 32 divisors (see below), whose sum is σ = 253526785881600. Its totient is φ = 191311378243200.

The previous prime is 221201020112087. The next prime is 221201020112119. The reversal of 221201020112111 is 111211020102122.

221201020112111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221201020112111 - 2⁴⁶ = 150832275934447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221201020112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201020112119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4597016 + ... + 21529853.

It is an arithmetic number, because the mean of its divisors is an integer number (7922712058800).

Almost surely, 2^{221201020112111} is an apocalyptic number.

221201020112111 is a deficient number, since it is larger than the sum of its proper divisors (32325765769489).

221201020112111 is a wasteful number, since it uses less digits than its factorization.

221201020112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26127279.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221201020112111 its reverse (111211020102122), we get a palindrome (332412040214233).

The spelling of 221201020112111 in words is "two hundred twenty-one trillion, two hundred one billion, twenty million, one hundred twelve thousand, one hundred eleven".