12200121991129 has 2 divisors, whose sum is σ = 12200121991130. Its totient is φ = 12200121991128.

The previous prime is 12200121991103. The next prime is 12200121991139. The reversal of 12200121991129 is 92119912100221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11526330552025 + 673791439104 = 3395045^2 + 820848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12200121991129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12200121991091 and 12200121991100.

It is not a weakly prime, because it can be changed into another prime (12200121991139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100060995564 + 6100060995565.

It is an arithmetic number, because the mean of its divisors is an integer number (6100060995565).

Almost surely, 2^{12200121991129} is an apocalyptic number.

It is an amenable number.

12200121991129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200121991129 is an equidigital number, since it uses as much as digits as its factorization.

12200121991129 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 12200121991129 in words is "twelve trillion, two hundred billion, one hundred twenty-one million, nine hundred ninety-one thousand, one hundred twenty-nine".