121211010101023 has 2 divisors, whose sum is σ = 121211010101024. Its totient is φ = 121211010101022.

The previous prime is 121211010100967. The next prime is 121211010101029. The reversal of 121211010101023 is 320101010112121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121211010101023 - 2³³ = 121202420166431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121211010100988 and 121211010101006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211010101029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605505050511 + 60605505050512.

It is an arithmetic number, because the mean of its divisors is an integer number (60605505050512).

Almost surely, 2^{121211010101023} is an apocalyptic number.

121211010101023 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211010101023 is an equidigital number, since it uses as much as digits as its factorization.

121211010101023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121211010101023 its reverse (320101010112121), we get a palindrome (441312020213144).

The spelling of 121211010101023 in words is "one hundred twenty-one trillion, two hundred eleven billion, ten million, one hundred one thousand, twenty-three".