21122322001331 has 4 divisors (see below), whose sum is σ = 21130849384512. Its totient is φ = 21113794618152.

The previous prime is 21122322001301. The next prime is 21122322001369. The reversal of 21122322001331 is 13310022322112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21122322001331 - 2¹⁴ = 21122321984947 is a prime.

It is a super-2 number, since 2×21122322001331² (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 = 21122322001297 and 21122322001306.

It is not an unprimeable number, because it can be changed into a prime (21122322001301) 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, 4263687875 + ... + 4263692828.

It is an arithmetic number, because the mean of its divisors is an integer number (5282712346128).

Almost surely, 2^{21122322001331} is an apocalyptic number.

21122322001331 is a deficient number, since it is larger than the sum of its proper divisors (8527383181).

21122322001331 is an equidigital number, since it uses as much as digits as its factorization.

21122322001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8527383180.

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

Adding to 21122322001331 its reverse (13310022322112), we get a palindrome (34432344323443).

The spelling of 21122322001331 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred twenty-two million, one thousand, three hundred thirty-one".