21231122200133 has 8 divisors (see below), whose sum is σ = 22158689283456. Its totient is φ = 20303928018000.

The previous prime is 21231122200109. The next prime is 21231122200163. The reversal of 21231122200133 is 33100222113212.

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 21231122200133 - 2¹⁰ = 21231122199109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21231122200099 and 21231122200108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231122200163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93108938 + ... + 93336683.

It is an arithmetic number, because the mean of its divisors is an integer number (2769836160432).

Almost surely, 2^{21231122200133} is an apocalyptic number.

21231122200133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21231122200133 is a deficient number, since it is larger than the sum of its proper divisors (927567083323).

21231122200133 is a wasteful number, since it uses less digits than its factorization.

21231122200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186450595.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21231122200133 its reverse (33100222113212), we get a palindrome (54331344313345).

The spelling of 21231122200133 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred twenty-two million, two hundred thousand, one hundred thirty-three".