21330232131004 has 48 divisors (see below), whose sum is σ = 37582502025600. Its totient is φ = 10592634124800.

The previous prime is 21330232130981. The next prime is 21330232131029. The reversal of 21330232131004 is 40013123203312.

It is a self number, because there is not a number n which added to its sum of digits gives 21330232131004.

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, 635019442 + ... + 635053030.

It is an arithmetic number, because the mean of its divisors is an integer number (782968792200).

Almost surely, 2^{21330232131004} is an apocalyptic number.

It is an amenable number.

21330232131004 is a deficient number, since it is larger than the sum of its proper divisors (16252269894596).

21330232131004 is a wasteful number, since it uses less digits than its factorization.

21330232131004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35494 (or 35492 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21330232131004 its reverse (40013123203312), we get a palindrome (61343355334316).

The spelling of 21330232131004 in words is "twenty-one trillion, three hundred thirty billion, two hundred thirty-two million, one hundred thirty-one thousand, four".