121201022100023 has 2 divisors, whose sum is σ = 121201022100024. Its totient is φ = 121201022100022.

The previous prime is 121201022099957. The next prime is 121201022100071. The reversal of 121201022100023 is 320001220102121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121201022100023 - 2¹⁸ = 121201021837879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121201022099974 and 121201022100010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201022100073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600511050011 + 60600511050012.

It is an arithmetic number, because the mean of its divisors is an integer number (60600511050012).

Almost surely, 2^{121201022100023} is an apocalyptic number.

121201022100023 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201022100023 is an equidigital number, since it uses as much as digits as its factorization.

121201022100023 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 17.

Adding to 121201022100023 its reverse (320001220102121), we get a palindrome (441202242202144).

The spelling of 121201022100023 in words is "one hundred twenty-one trillion, two hundred one billion, twenty-two million, one hundred thousand, twenty-three".