121000200012823 has 2 divisors, whose sum is σ = 121000200012824. Its totient is φ = 121000200012822.

The previous prime is 121000200012721. The next prime is 121000200012827. The reversal of 121000200012823 is 328210002000121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121000200012823 - 2³³ = 120991610078231 is a prime.

It is a super-2 number, since 2×121000200012823² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121000200012794 and 121000200012803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000200012827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500100006411 + 60500100006412.

It is an arithmetic number, because the mean of its divisors is an integer number (60500100006412).

Almost surely, 2^{121000200012823} is an apocalyptic number.

121000200012823 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000200012823 is an equidigital number, since it uses as much as digits as its factorization.

121000200012823 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 22.

Adding to 121000200012823 its reverse (328210002000121), we get a palindrome (449210202012944).

The spelling of 121000200012823 in words is "one hundred twenty-one trillion, two hundred million, twelve thousand, eight hundred twenty-three".