211430422429 has 2 divisors, whose sum is σ = 211430422430. Its totient is φ = 211430422428.

The previous prime is 211430422387. The next prime is 211430422447. The reversal of 211430422429 is 924224034112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133199451225 + 78230971204 = 364965^2 + 279698^2 .

It is a cyclic number.

It is not a de Polignac number, because 211430422429 - 2¹¹ = 211430420381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211430422394 and 211430422403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211430422459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105715211214 + 105715211215.

It is an arithmetic number, because the mean of its divisors is an integer number (105715211215).

Almost surely, 2^211430422429 is an apocalyptic number.

It is an amenable number.

211430422429 is a deficient number, since it is larger than the sum of its proper divisors (1).

211430422429 is an equidigital number, since it uses as much as digits as its factorization.

211430422429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 211430422429 in words is "two hundred eleven billion, four hundred thirty million, four hundred twenty-two thousand, four hundred twenty-nine".