22121343422331 has 16 divisors (see below), whose sum is σ = 30481061145600. Its totient is φ = 14255671520160.

The previous prime is 22121343422287. The next prime is 22121343422389. The reversal of 22121343422331 is 13322434312122.

It is a happy number.

It is not a de Polignac number, because 22121343422331 - 2¹⁹ = 22121342898043 is a prime.

It is a super-2 number, since 2×22121343422331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22121343422292 and 22121343422301.

It is not an unprimeable number, because it can be changed into a prime (22121343423331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134608656 + ... + 134772893.

It is an arithmetic number, because the mean of its divisors is an integer number (1905066321600).

Almost surely, 2^{22121343422331} is an apocalyptic number.

22121343422331 is a deficient number, since it is larger than the sum of its proper divisors (8359717723269).

22121343422331 is a wasteful number, since it uses less digits than its factorization.

22121343422331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269382466.

The product of its digits is 41472, while the sum is 33.

Adding to 22121343422331 its reverse (13322434312122), we get a palindrome (35443777734453).

The spelling of 22121343422331 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred forty-three million, four hundred twenty-two thousand, three hundred thirty-one".