21230330032 has 20 divisors (see below), whose sum is σ = 41191803040. Its totient is φ = 10600187328.

The previous prime is 21230329979. The next prime is 21230330059. The reversal of 21230330032 is 23003303212.

It is a happy number.

It is a super-2 number, since 2×21230330032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21230329991 and 21230330009.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924408 + ... + 947095.

It is an arithmetic number, because the mean of its divisors is an integer number (2059590152).

Almost surely, 2^21230330032 is an apocalyptic number.

It is an amenable number.

21230330032 is a deficient number, since it is larger than the sum of its proper divisors (19961473008).

21230330032 is a wasteful number, since it uses less digits than its factorization.

21230330032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872220 (or 1872214 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21230330032 its reverse (23003303212), we get a palindrome (44233633244).

The spelling of 21230330032 in words is "twenty-one billion, two hundred thirty million, three hundred thirty thousand, thirty-two".