121211212122023 has 2 divisors, whose sum is σ = 121211212122024. Its totient is φ = 121211212122022.

The previous prime is 121211212121971. The next prime is 121211212122053. The reversal of 121211212122023 is 320221212112121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121211212122023 - 2¹⁸ = 121211211859879 is a prime.

It is a super-2 number, since 2×121211212122023² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121211212122023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211212122053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605606061011 + 60605606061012.

It is an arithmetic number, because the mean of its divisors is an integer number (60605606061012).

Almost surely, 2^{121211212122023} is an apocalyptic number.

121211212122023 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211212122023 is an equidigital number, since it uses as much as digits as its factorization.

121211212122023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 121211212122023 its reverse (320221212112121), we get a palindrome (441432424234144).

The spelling of 121211212122023 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, twenty-three".