121103011222021 has 2 divisors, whose sum is σ = 121103011222022. Its totient is φ = 121103011222020.

The previous prime is 121103011221989. The next prime is 121103011222057. The reversal of 121103011222021 is 120222110301121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92695283809921 + 28407727412100 = 9627839^2 + 5329890^2 .

It is a cyclic number.

It is not a de Polignac number, because 121103011222021 - 2⁵ = 121103011221989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121103011222021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121103011922021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551505611010 + 60551505611011.

It is an arithmetic number, because the mean of its divisors is an integer number (60551505611011).

Almost surely, 2^{121103011222021} is an apocalyptic number.

It is an amenable number.

121103011222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121103011222021 is an equidigital number, since it uses as much as digits as its factorization.

121103011222021 is an evil number, because the sum of its binary digits is even.

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

Adding to 121103011222021 its reverse (120222110301121), we get a palindrome (241325121523142).

The spelling of 121103011222021 in words is "one hundred twenty-one trillion, one hundred three billion, eleven million, two hundred twenty-two thousand, twenty-one".