21041442033 has 8 divisors (see below), whose sum is σ = 28370484000. Its totient is φ = 13870014048.

The previous prime is 21041442031. The next prime is 21041442047. The reversal of 21041442033 is 33024414012.

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

It is not a de Polignac number, because 21041442033 - 2¹ = 21041442031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21041441994 and 21041442012.

It is not an unprimeable number, because it can be changed into a prime (21041442031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39403183 + ... + 39403716.

It is an arithmetic number, because the mean of its divisors is an integer number (3546310500).

Almost surely, 2^21041442033 is an apocalyptic number.

It is an amenable number.

21041442033 is a deficient number, since it is larger than the sum of its proper divisors (7329041967).

21041442033 is an equidigital number, since it uses as much as digits as its factorization.

21041442033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78806991.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21041442033 its reverse (33024414012), we get a palindrome (54065856045).

The spelling of 21041442033 in words is "twenty-one billion, forty-one million, four hundred forty-two thousand, thirty-three".