121220111221103 has 2 divisors, whose sum is σ = 121220111221104. Its totient is φ = 121220111221102.

The previous prime is 121220111221073. The next prime is 121220111221133. The reversal of 121220111221103 is 301122111022121.

It is a balanced prime because it is at equal distance from previous prime (121220111221073) and next prime (121220111221133).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220111221103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220111221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610055610551 + 60610055610552.

It is an arithmetic number, because the mean of its divisors is an integer number (60610055610552).

Almost surely, 2^{121220111221103} is an apocalyptic number.

121220111221103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220111221103 is an equidigital number, since it uses as much as digits as its factorization.

121220111221103 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 20.

Adding to 121220111221103 its reverse (301122111022121), we get a palindrome (422342222243224).

The spelling of 121220111221103 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred three".