221102111201 has 4 divisors (see below), whose sum is σ = 221160253872. Its totient is φ = 221043968532.

The previous prime is 221102111173. The next prime is 221102111207. The reversal of 221102111201 is 102111201122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221102111201 - 2⁶ = 221102111137 is a prime.

It is a super-2 number, since 2×221102111201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221102111207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29065631 + ... + 29073236.

It is an arithmetic number, because the mean of its divisors is an integer number (55290063468).

Almost surely, 2^221102111201 is an apocalyptic number.

It is an amenable number.

221102111201 is a deficient number, since it is larger than the sum of its proper divisors (58142671).

221102111201 is an equidigital number, since it uses as much as digits as its factorization.

221102111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58142670.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221102111201 its reverse (102111201122), we get a palindrome (323213312323).

It can be divided in two parts, 2211021 and 11201, that added together give a palindrome (2222222).

The spelling of 221102111201 in words is "two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, two hundred one".