221112211201 has 16 divisors (see below), whose sum is σ = 258930282240. Its totient is φ = 184854193920.

The previous prime is 221112211193. The next prime is 221112211207. The reversal of 221112211201 is 102112211122.

It is a cyclic number.

It is not a de Polignac number, because 221112211201 - 2³ = 221112211193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221112211207) 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, 1029580 + ... + 1225666.

It is an arithmetic number, because the mean of its divisors is an integer number (16183142640).

Almost surely, 2^221112211201 is an apocalyptic number.

It is an amenable number.

221112211201 is a deficient number, since it is larger than the sum of its proper divisors (37818071039).

221112211201 is a wasteful number, since it uses less digits than its factorization.

221112211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200064.

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

Adding to 221112211201 its reverse (102112211122), we get a palindrome (323224422323).

The spelling of 221112211201 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, two hundred one".