21133443130 has 32 divisors (see below), whose sum is σ = 38794650624. Its totient is φ = 8286023616.

The previous prime is 21133443061. The next prime is 21133443131. The reversal of 21133443130 is 3134433112.

It is a junction number, because it is equal to n+sod(n) for n = 21133443095 and 21133443104.

It is not an unprimeable number, because it can be changed into a prime (21133443131) 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 15 ways as a sum of consecutive naturals, for example, 557769 + ... + 594451.

It is an arithmetic number, because the mean of its divisors is an integer number (1212332832).

Almost surely, 2^21133443130 is an apocalyptic number.

21133443130 is a deficient number, since it is larger than the sum of its proper divisors (17661207494).

21133443130 is a wasteful number, since it uses less digits than its factorization.

21133443130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37830.

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

Adding to 21133443130 its reverse (3134433112), we get a palindrome (24267876242).

The spelling of 21133443130 in words is "twenty-one billion, one hundred thirty-three million, four hundred forty-three thousand, one hundred thirty".