21123313003132 has 36 divisors (see below), whose sum is σ = 38800213661664. Its totient is φ = 10057563515520.

The previous prime is 21123313003129. The next prime is 21123313003141. The reversal of 21123313003132 is 23130031332112.

It is a junction number, because it is equal to n+sod(n) for n = 21123313003097 and 21123313003106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40779169 + ... + 41293912.

It is an arithmetic number, because the mean of its divisors is an integer number (1077783712824).

Almost surely, 2^{21123313003132} is an apocalyptic number.

It is an amenable number.

21123313003132 is a deficient number, since it is larger than the sum of its proper divisors (17676900658532).

21123313003132 is a wasteful number, since it uses less digits than its factorization.

21123313003132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82073206 (or 82073167 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21123313003132 its reverse (23130031332112), we get a palindrome (44253344335244).

The spelling of 21123313003132 in words is "twenty-one trillion, one hundred twenty-three billion, three hundred thirteen million, three thousand, one hundred thirty-two".