21365522233141 has 4 divisors (see below), whose sum is σ = 22294457982432. Its totient is φ = 20436586483852.

The previous prime is 21365522233123. The next prime is 21365522233201. The reversal of 21365522233141 is 14133222556312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21365522233141 - 2¹⁷ = 21365522102069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21365522233094 and 21365522233103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21365522233541) 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, 464467874611 + ... + 464467874656.

It is an arithmetic number, because the mean of its divisors is an integer number (5573614495608).

Almost surely, 2^{21365522233141} is an apocalyptic number.

It is an amenable number.

21365522233141 is a deficient number, since it is larger than the sum of its proper divisors (928935749291).

21365522233141 is an equidigital number, since it uses as much as digits as its factorization.

21365522233141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928935749290.

The product of its digits is 259200, while the sum is 40.

Adding to 21365522233141 its reverse (14133222556312), we get a palindrome (35498744789453).

The spelling of 21365522233141 in words is "twenty-one trillion, three hundred sixty-five billion, five hundred twenty-two million, two hundred thirty-three thousand, one hundred forty-one".