2171932229 has 2 divisors, whose sum is σ = 2171932230. Its totient is φ = 2171932228.

The previous prime is 2171932201. The next prime is 2171932253. The reversal of 2171932229 is 9222391712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1568001604 + 603930625 = 39598^2 + 24575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171932229 - 2⁸ = 2171931973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2171932192 and 2171932201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171952229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085966114 + 1085966115.

It is an arithmetic number, because the mean of its divisors is an integer number (1085966115).

Almost surely, 2^2171932229 is an apocalyptic number.

It is an amenable number.

2171932229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171932229 is an equidigital number, since it uses as much as digits as its factorization.

2171932229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 2171932229 is about 46603.9937022569. The cubic root of 2171932229 is about 1295.0367414033.

The spelling of 2171932229 in words is "two billion, one hundred seventy-one million, nine hundred thirty-two thousand, two hundred twenty-nine".