221111002112201 has 4 divisors (see below), whose sum is σ = 221122514132352. Its totient is φ = 221099490092052.

The previous prime is 221111002112159. The next prime is 221111002112237. The reversal of 221111002112201 is 102211200111122.

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 a de Polignac number, because none of the positive numbers 2^k-221111002112201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221111002112201.

It is not an unprimeable number, because it can be changed into a prime (221111002312201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5755981265 + ... + 5756019678.

It is an arithmetic number, because the mean of its divisors is an integer number (55280628533088).

Almost surely, 2^{221111002112201} is an apocalyptic number.

It is an amenable number.

221111002112201 is a deficient number, since it is larger than the sum of its proper divisors (11512020151).

221111002112201 is a wasteful number, since it uses less digits than its factorization.

221111002112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11512020150.

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

Adding to 221111002112201 its reverse (102211200111122), we get a palindrome (323322202223323).

The spelling of 221111002112201 in words is "two hundred twenty-one trillion, one hundred eleven billion, two million, one hundred twelve thousand, two hundred one".