121320213031103 has 2 divisors, whose sum is σ = 121320213031104. Its totient is φ = 121320213031102.

The previous prime is 121320213031097. The next prime is 121320213031117. The reversal of 121320213031103 is 301130312023121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121320213031103 - 2⁴² = 116922166519999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121320213031123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660106515551 + 60660106515552.

It is an arithmetic number, because the mean of its divisors is an integer number (60660106515552).

Almost surely, 2^{121320213031103} is an apocalyptic number.

121320213031103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121320213031103 is an equidigital number, since it uses as much as digits as its factorization.

121320213031103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121320213031103 its reverse (301130312023121), we get a palindrome (422450525054224).

The spelling of 121320213031103 in words is "one hundred twenty-one trillion, three hundred twenty billion, two hundred thirteen million, thirty-one thousand, one hundred three".