210002000123129 has 2 divisors, whose sum is σ = 210002000123130. Its totient is φ = 210002000123128.

The previous prime is 210002000123057. The next prime is 210002000123143. The reversal of 210002000123129 is 921321000200012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166098481926400 + 43903518196729 = 12887920^2 + 6625973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210002000123129 is a prime.

It is not a weakly prime, because it can be changed into another prime (210002000123329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105001000061564 + 105001000061565.

It is an arithmetic number, because the mean of its divisors is an integer number (105001000061565).

Almost surely, 2^{210002000123129} is an apocalyptic number.

It is an amenable number.

210002000123129 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002000123129 is an equidigital number, since it uses as much as digits as its factorization.

210002000123129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 210002000123129 in words is "two hundred ten trillion, two billion, one hundred twenty-three thousand, one hundred twenty-nine".