21112033043 has 2 divisors, whose sum is σ = 21112033044. Its totient is φ = 21112033042.

The previous prime is 21112033021. The next prime is 21112033073. The reversal of 21112033043 is 34033021112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112033043 - 2⁶ = 21112032979 is a prime.

It is not a weakly prime, because it can be changed into another prime (21112033073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556016521 + 10556016522.

It is an arithmetic number, because the mean of its divisors is an integer number (10556016522).

Almost surely, 2^21112033043 is an apocalyptic number.

21112033043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112033043 is an equidigital number, since it uses as much as digits as its factorization.

21112033043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21112033043 its reverse (34033021112), we get a palindrome (55145054155).

The spelling of 21112033043 in words is "twenty-one billion, one hundred twelve million, thirty-three thousand, forty-three".