21233123004 has 48 divisors (see below), whose sum is σ = 49813327872. Its totient is φ = 7039315392.

The previous prime is 21233122987. The next prime is 21233123047. The reversal of 21233123004 is 40032133212.

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, 2055717 + ... + 2066019.

It is an arithmetic number, because the mean of its divisors is an integer number (1037777664).

Almost surely, 2^21233123004 is an apocalyptic number.

It is an amenable number.

21233123004 is an abundant number, since it is smaller than the sum of its proper divisors (28580204868).

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

21233123004 is a wasteful number, since it uses less digits than its factorization.

21233123004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226 (or 11224 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21233123004 its reverse (40032133212), we get a palindrome (61265256216).

The spelling of 21233123004 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty-three thousand, four".