21032880229 has 2 divisors, whose sum is σ = 21032880230. Its totient is φ = 21032880228.

The previous prime is 21032880223. The next prime is 21032880247. The reversal of 21032880229 is 92208823012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15499752004 + 5533128225 = 124498^2 + 74385^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032880229 - 2⁹ = 21032879717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21032880223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516440114 + 10516440115.

It is an arithmetic number, because the mean of its divisors is an integer number (10516440115).

Almost surely, 2^21032880229 is an apocalyptic number.

It is an amenable number.

21032880229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032880229 is an equidigital number, since it uses as much as digits as its factorization.

21032880229 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 37.

The spelling of 21032880229 in words is "twenty-one billion, thirty-two million, eight hundred eighty thousand, two hundred twenty-nine".