221330111103001 has 4 divisors (see below), whose sum is σ = 223398616814352. Its totient is φ = 219261605391652.

The previous prime is 221330111102819. The next prime is 221330111103089. The reversal of 221330111103001 is 100301111033122.

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-221330111103001 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 221330111103001.

It is not an unprimeable number, because it can be changed into a prime (221330111103701) 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, 1034252855515 + ... + 1034252855728.

It is an arithmetic number, because the mean of its divisors is an integer number (55849654203588).

Almost surely, 2^{221330111103001} is an apocalyptic number.

It is an amenable number.

221330111103001 is a deficient number, since it is larger than the sum of its proper divisors (2068505711351).

221330111103001 is a wasteful number, since it uses less digits than its factorization.

221330111103001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068505711350.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 221330111103001 its reverse (100301111033122), we get a palindrome (321631222136123).

The spelling of 221330111103001 in words is "two hundred twenty-one trillion, three hundred thirty billion, one hundred eleven million, one hundred three thousand, one".