210212421329 has 2 divisors, whose sum is σ = 210212421330. Its totient is φ = 210212421328.

The previous prime is 210212421301. The next prime is 210212421337. The reversal of 210212421329 is 923124212012.

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., 112528044304 + 97684377025 = 335452^2 + 312545^2 .

It is a cyclic number.

It is not a de Polignac number, because 210212421329 - 2³² = 205917454033 is a prime.

It is not a weakly prime, because it can be changed into another prime (210212427329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105106210664 + 105106210665.

It is an arithmetic number, because the mean of its divisors is an integer number (105106210665).

Almost surely, 2^210212421329 is an apocalyptic number.

It is an amenable number.

210212421329 is a deficient number, since it is larger than the sum of its proper divisors (1).

210212421329 is an equidigital number, since it uses as much as digits as its factorization.

210212421329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 210212421329 in words is "two hundred ten billion, two hundred twelve million, four hundred twenty-one thousand, three hundred twenty-nine".