21122020133 has 8 divisors (see below), whose sum is σ = 21699471360. Its totient is φ = 20544915600.

The previous prime is 21122020057. The next prime is 21122020181. The reversal of 21122020133 is 33102022112.

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 21122020133 - 2¹⁰ = 21122019109 is a prime.

It is a super-2 number, since 2×21122020133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122020033) 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, 39308 + ... + 209258.

It is an arithmetic number, because the mean of its divisors is an integer number (2712433920).

Almost surely, 2^21122020133 is an apocalyptic number.

It is an amenable number.

21122020133 is a deficient number, since it is larger than the sum of its proper divisors (577451227).

21122020133 is a wasteful number, since it uses less digits than its factorization.

21122020133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173347.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21122020133 its reverse (33102022112), we get a palindrome (54224042245).

The spelling of 21122020133 in words is "twenty-one billion, one hundred twenty-two million, twenty thousand, one hundred thirty-three".