21322200133 has 4 divisors (see below), whose sum is σ = 22962369388. Its totient is φ = 19682030880.

The previous prime is 21322200127. The next prime is 21322200143. The reversal of 21322200133 is 33100222312.

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 1122116004 + 20200084129 = 33498^2 + 142127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21322200133 is a prime.

It is a super-3 number, since 3×21322200133³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21322200133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322200103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820084608 + ... + 820084633.

It is an arithmetic number, because the mean of its divisors is an integer number (5740592347).

Almost surely, 2^21322200133 is an apocalyptic number.

It is an amenable number.

21322200133 is a deficient number, since it is larger than the sum of its proper divisors (1640169255).

21322200133 is a wasteful number, since it uses less digits than its factorization.

21322200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640169254.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21322200133 its reverse (33100222312), we get a palindrome (54422422445).

The spelling of 21322200133 in words is "twenty-one billion, three hundred twenty-two million, two hundred thousand, one hundred thirty-three".