22012123221331 has 4 divisors (see below), whose sum is σ = 22015989751392. Its totient is φ = 22008256691272.

The previous prime is 22012123221317. The next prime is 22012123221371. The reversal of 22012123221331 is 13312232121022.

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 22012123221331 - 2⁷ = 22012123221203 is a prime.

It is a super-2 number, since 2×22012123221331² (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 = 22012123221296 and 22012123221305.

It is not an unprimeable number, because it can be changed into a prime (22012123221371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933256491 + ... + 1933267876.

It is an arithmetic number, because the mean of its divisors is an integer number (5503997437848).

Almost surely, 2^{22012123221331} is an apocalyptic number.

22012123221331 is a deficient number, since it is larger than the sum of its proper divisors (3866530061).

22012123221331 is an equidigital number, since it uses as much as digits as its factorization.

22012123221331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866530060.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 22012123221331 its reverse (13312232121022), we get a palindrome (35324355342353).

The spelling of 22012123221331 in words is "twenty-two trillion, twelve billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred thirty-one".