21430133024 has 24 divisors (see below), whose sum is σ = 42219117360. Its totient is φ = 10707817536.

The previous prime is 21430133009. The next prime is 21430133027. The reversal of 21430133024 is 42033103412.

It is not an unprimeable number, because it can be changed into a prime (21430133027) 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 3 ways as a sum of consecutive naturals, for example, 178334 + ... + 273245.

It is an arithmetic number, because the mean of its divisors is an integer number (1759129890).

Almost surely, 2^21430133024 is an apocalyptic number.

It is an amenable number.

21430133024 is a deficient number, since it is larger than the sum of its proper divisors (20788984336).

21430133024 is a wasteful number, since it uses less digits than its factorization.

21430133024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453072 (or 453064 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21430133024 its reverse (42033103412), we get a palindrome (63463236436).

The spelling of 21430133024 in words is "twenty-one billion, four hundred thirty million, one hundred thirty-three thousand, twenty-four".