221201121103 has 2 divisors, whose sum is σ = 221201121104. Its totient is φ = 221201121102.

The previous prime is 221201121091. The next prime is 221201121161. The reversal of 221201121103 is 301121102122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221201121103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221201121503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600560551 + 110600560552.

It is an arithmetic number, because the mean of its divisors is an integer number (110600560552).

Almost surely, 2^221201121103 is an apocalyptic number.

221201121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

221201121103 is an equidigital number, since it uses as much as digits as its factorization.

221201121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221201121103 its reverse (301121102122), we get a palindrome (522322223225).

The spelling of 221201121103 in words is "two hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, one hundred three".