21122204033 has 8 divisors (see below), whose sum is σ = 24378669120. Its totient is φ = 17925490800.

The previous prime is 21122204029. The next prime is 21122204041. The reversal of 21122204033 is 33040222112.

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

It is not a de Polignac number, because 21122204033 - 2² = 21122204029 is a prime.

It is a super-2 number, since 2×21122204033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21122203996 and 21122204014.

It is not an unprimeable number, because it can be changed into a prime (21122204083) 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 7 ways as a sum of consecutive naturals, for example, 14937203 + ... + 14938616.

It is an arithmetic number, because the mean of its divisors is an integer number (3047333640).

Almost surely, 2^21122204033 is an apocalyptic number.

It is an amenable number.

21122204033 is a deficient number, since it is larger than the sum of its proper divisors (3256465087).

21122204033 is a wasteful number, since it uses less digits than its factorization.

21122204033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29875927.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21122204033 its reverse (33040222112), we get a palindrome (54162426145).

The spelling of 21122204033 in words is "twenty-one billion, one hundred twenty-two million, two hundred four thousand, thirty-three".