21220030329 has 16 divisors (see below), whose sum is σ = 29385123840. Its totient is φ = 13611015440.

The previous prime is 21220030301. The next prime is 21220030393. The reversal of 21220030329 is 92303002212.

It is a cyclic number.

It is not a de Polignac number, because 21220030329 - 2⁵ = 21220030297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21220030299 and 21220030308.

It is not an unprimeable number, because it can be changed into a prime (21220030229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1267077 + ... + 1283714.

It is an arithmetic number, because the mean of its divisors is an integer number (1836570240).

Almost surely, 2^21220030329 is an apocalyptic number.

It is an amenable number.

21220030329 is a deficient number, since it is larger than the sum of its proper divisors (8165093511).

21220030329 is a wasteful number, since it uses less digits than its factorization.

21220030329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550900.

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 21220030329 in words is "twenty-one billion, two hundred twenty million, thirty thousand, three hundred twenty-nine".