210002120400029 has 2 divisors, whose sum is σ = 210002120400030. Its totient is φ = 210002120400028.

The previous prime is 210002120399987. The next prime is 210002120400041. The reversal of 210002120400029 is 920004021200012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191715122131129 + 18286998268900 = 13846123^2 + 4276330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210002120400029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210002120399977 and 210002120400013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210002120400089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105001060200014 + 105001060200015.

It is an arithmetic number, because the mean of its divisors is an integer number (105001060200015).

Almost surely, 2^{210002120400029} is an apocalyptic number.

It is an amenable number.

210002120400029 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002120400029 is an equidigital number, since it uses as much as digits as its factorization.

210002120400029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 210002120400029 in words is "two hundred ten trillion, two billion, one hundred twenty million, four hundred thousand, twenty-nine".