12121200023 has 2 divisors, whose sum is σ = 12121200024. Its totient is φ = 12121200022.

The previous prime is 12121199999. The next prime is 12121200067. The reversal of 12121200023 is 32000212121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12121200023 - 2¹² = 12121195927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12121199980 and 12121200007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121200523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060600011 + 6060600012.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600012).

Almost surely, 2^12121200023 is an apocalyptic number.

12121200023 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121200023 is an equidigital number, since it uses as much as digits as its factorization.

12121200023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12121200023 its reverse (32000212121), we get a palindrome (44121412144).

The spelling of 12121200023 in words is "twelve billion, one hundred twenty-one million, two hundred thousand, twenty-three".