221121020121103 has 2 divisors, whose sum is σ = 221121020121104. Its totient is φ = 221121020121102.

The previous prime is 221121020121061. The next prime is 221121020121107. The reversal of 221121020121103 is 301121020121122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221121020121103 - 2²¹ = 221121018023951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221121020121107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560510060551 + 110560510060552.

It is an arithmetic number, because the mean of its divisors is an integer number (110560510060552).

Almost surely, 2^{221121020121103} is an apocalyptic number.

221121020121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

221121020121103 is an equidigital number, since it uses as much as digits as its factorization.

221121020121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 221121020121103 its sum of digits (19), we get a palindrome (221121020121122).

Adding to 221121020121103 its reverse (301121020121122), we get a palindrome (522242040242225).

The spelling of 221121020121103 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred three".