21232213030 has 48 divisors (see below), whose sum is σ = 44598225456. Its totient is φ = 7256598720.

The previous prime is 21232212961. The next prime is 21232213039. The reversal of 21232213030 is 3031223212.

It is a junction number, because it is equal to n+sod(n) for n = 21232212989 and 21232213007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232213039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86985 + ... + 223675.

It is an arithmetic number, because the mean of its divisors is an integer number (929129697).

Almost surely, 2^21232213030 is an apocalyptic number.

21232213030 is an abundant number, since it is smaller than the sum of its proper divisors (23366012426).

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

21232213030 is a wasteful number, since it uses less digits than its factorization.

21232213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137029 (or 137022 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21232213030 its reverse (3031223212), we get a palindrome (24263436242).

The spelling of 21232213030 in words is "twenty-one billion, two hundred thirty-two million, two hundred thirteen thousand, thirty".