21133004043 has 8 divisors (see below), whose sum is σ = 28864591056. Its totient is φ = 13745043200.

The previous prime is 21133004041. The next prime is 21133004047. The reversal of 21133004043 is 34040033112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21133004043 - 2¹ = 21133004041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21133004041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85906398 + ... + 85906643.

It is an arithmetic number, because the mean of its divisors is an integer number (3608073882).

Almost surely, 2^21133004043 is an apocalyptic number.

21133004043 is a deficient number, since it is larger than the sum of its proper divisors (7731587013).

21133004043 is a wasteful number, since it uses less digits than its factorization.

21133004043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171813085.

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

Adding to 21133004043 its reverse (34040033112), we get a palindrome (55173037155).

The spelling of 21133004043 in words is "twenty-one billion, one hundred thirty-three million, four thousand, forty-three".