12200121929 has 2 divisors, whose sum is σ = 12200121930. Its totient is φ = 12200121928.

The previous prime is 12200121907. The next prime is 12200121971. The reversal of 12200121929 is 92912100221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12113203600 + 86918329 = 110060^2 + 9323^2 .

It is an emirp because it is prime and its reverse (92912100221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12200121929 - 2²⁴ = 12183344713 is a prime.

It is not a weakly prime, because it can be changed into another prime (12200121029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100060964 + 6100060965.

It is an arithmetic number, because the mean of its divisors is an integer number (6100060965).

Almost surely, 2^12200121929 is an apocalyptic number.

It is an amenable number.

12200121929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200121929 is an equidigital number, since it uses as much as digits as its factorization.

12200121929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 12200121929 in words is "twelve billion, two hundred million, one hundred twenty-one thousand, nine hundred twenty-nine".