221110111201 has 12 divisors (see below), whose sum is σ = 257267891460. Its totient is φ = 189480090240.

The previous prime is 221110111127. The next prime is 221110111213. The reversal of 221110111201 is 102111011122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178375299025 + 42734812176 = 422345^2 + 206724^2 .

It is not a de Polignac number, because 221110111201 - 2¹⁷ = 221109980129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221110115201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290436 + ... + 725653.

It is an arithmetic number, because the mean of its divisors is an integer number (21438990955).

Almost surely, 2^221110111201 is an apocalyptic number.

It is an amenable number.

221110111201 is a deficient number, since it is larger than the sum of its proper divisors (36157780259).

221110111201 is a wasteful number, since it uses less digits than its factorization.

221110111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020544 (or 1020537 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 221110111201 its reverse (102111011122), we get a palindrome (323221122323).

The spelling of 221110111201 in words is "two hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred one".