21442023403033 has 4 divisors (see below), whose sum is σ = 21638739214180. Its totient is φ = 21245307591888.

The previous prime is 21442023403019. The next prime is 21442023403123. The reversal of 21442023403033 is 33030432024412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14915291169024 + 6526732234009 = 3862032^2 + 2554747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21442023403033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21442023402986 and 21442023403004.

It is not an unprimeable number, because it can be changed into a prime (21442023400033) 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, 98357905410 + ... + 98357905627.

It is an arithmetic number, because the mean of its divisors is an integer number (5409684803545).

Almost surely, 2^{21442023403033} is an apocalyptic number.

It is an amenable number.

21442023403033 is a deficient number, since it is larger than the sum of its proper divisors (196715811147).

21442023403033 is a wasteful number, since it uses less digits than its factorization.

21442023403033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196715811146.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 21442023403033 its reverse (33030432024412), we get a palindrome (54472455427445).

The spelling of 21442023403033 in words is "twenty-one trillion, four hundred forty-two billion, twenty-three million, four hundred three thousand, thirty-three".