12122111009929 has 2 divisors, whose sum is σ = 12122111009930. Its totient is φ = 12122111009928.

The previous prime is 12122111009923. The next prime is 12122111010131. The reversal of 12122111009929 is 92990011122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7052530035600 + 5069580974329 = 2655660^2 + 2251573^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122111009929 - 2⁹ = 12122111009417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122111009891 and 12122111009900.

It is not a weakly prime, because it can be changed into another prime (12122111009923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061055504964 + 6061055504965.

It is an arithmetic number, because the mean of its divisors is an integer number (6061055504965).

Almost surely, 2^{12122111009929} is an apocalyptic number.

It is an amenable number.

12122111009929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122111009929 is an equidigital number, since it uses as much as digits as its factorization.

12122111009929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 12122111009929 in words is "twelve trillion, one hundred twenty-two billion, one hundred eleven million, nine thousand, nine hundred twenty-nine".