21323221231133 has 8 divisors (see below), whose sum is σ = 21859349303736. Its totient is φ = 20787857420800.

The previous prime is 21323221231099. The next prime is 21323221231201. The reversal of 21323221231133 is 33113212232312.

It can be written as a sum of positive squares in 4 ways, for example, as 459538919449 + 20863682311684 = 677893^2 + 4567678^2 .

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 21323221231133 - 2⁶ = 21323221231069 is a prime.

It is a super-2 number, since 2×21323221231133² (a number of 27 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 = 21323221231096 and 21323221231105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323221231733) 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, 191009066 + ... + 191120667.

It is an arithmetic number, because the mean of its divisors is an integer number (2732418662967).

Almost surely, 2^{21323221231133} is an apocalyptic number.

It is an amenable number.

21323221231133 is a deficient number, since it is larger than the sum of its proper divisors (536128072603).

21323221231133 is a wasteful number, since it uses less digits than its factorization.

21323221231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382131135.

The product of its digits is 7776, while the sum is 29.

Adding to 21323221231133 its reverse (33113212232312), we get a palindrome (54436433463445).

The spelling of 21323221231133 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred twenty-one million, two hundred thirty-one thousand, one hundred thirty-three".