21233123030 has 32 divisors (see below), whose sum is σ = 44860101696. Its totient is φ = 7083172224.

The previous prime is 21233122987. The next prime is 21233123047. The reversal of 21233123030 is 3032133212.

It is a junction number, because it is equal to n+sod(n) for n = 21233122993 and 21233123011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4096469 + ... + 4101648.

It is an arithmetic number, because the mean of its divisors is an integer number (1401878178).

Almost surely, 2^21233123030 is an apocalyptic number.

21233123030 is an abundant number, since it is smaller than the sum of its proper divisors (23626978666).

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

21233123030 is a wasteful number, since it uses less digits than its factorization.

21233123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8198168.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21233123030 its reverse (3032133212), we get a palindrome (24265256242).

The spelling of 21233123030 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty-three thousand, thirty".