10001221103 has 2 divisors, whose sum is σ = 10001221104. Its totient is φ = 10001221102.

The previous prime is 10001221093. The next prime is 10001221127. The reversal of 10001221103 is 30112210001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001221103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001221003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000610551 + 5000610552.

It is an arithmetic number, because the mean of its divisors is an integer number (5000610552).

Almost surely, 2^10001221103 is an apocalyptic number.

10001221103 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001221103 is an equidigital number, since it uses as much as digits as its factorization.

10001221103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10001221103 its reverse (30112210001), we get a palindrome (40113431104).

The spelling of 10001221103 in words is "ten billion, one million, two hundred twenty-one thousand, one hundred three".