22012212331 has 2 divisors, whose sum is σ = 22012212332. Its totient is φ = 22012212330.

The previous prime is 22012212317. The next prime is 22012212337. The reversal of 22012212331 is 13321221022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012212331 is a prime.

It is a super-2 number, since 2×22012212331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22012212299 and 22012212308.

It is not a weakly prime, because it can be changed into another prime (22012212337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006106165 + 11006106166.

It is an arithmetic number, because the mean of its divisors is an integer number (11006106166).

Almost surely, 2^22012212331 is an apocalyptic number.

22012212331 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012212331 is an equidigital number, since it uses as much as digits as its factorization.

22012212331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22012212331 its reverse (13321221022), we get a palindrome (35333433353).

The spelling of 22012212331 in words is "twenty-two billion, twelve million, two hundred twelve thousand, three hundred thirty-one".