21030217332 has 48 divisors (see below), whose sum is σ = 51133239360. Its totient is φ = 6718926592.

The previous prime is 21030217331. The next prime is 21030217333. The reversal of 21030217332 is 23371203012.

It is an interprime number because it is at equal distance from previous prime (21030217331) and next prime (21030217333).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030217331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172878 + ... + 268229.

It is an arithmetic number, because the mean of its divisors is an integer number (1065275820).

Almost surely, 2^21030217332 is an apocalyptic number.

It is an amenable number.

21030217332 is an abundant number, since it is smaller than the sum of its proper divisors (30103022028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21030217332 is a wasteful number, since it uses less digits than its factorization.

21030217332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441280 (or 441278 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The spelling of 21030217332 in words is "twenty-one billion, thirty million, two hundred seventeen thousand, three hundred thirty-two".