22211131321 has 2 divisors, whose sum is σ = 22211131322. Its totient is φ = 22211131320.

The previous prime is 22211131249. The next prime is 22211131343. The reversal of 22211131321 is 12313111222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19796490000 + 2414641321 = 140700^2 + 49139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22211131321 is a prime.

It is not a weakly prime, because it can be changed into another prime (22211131381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105565660 + 11105565661.

It is an arithmetic number, because the mean of its divisors is an integer number (11105565661).

Almost surely, 2^22211131321 is an apocalyptic number.

It is an amenable number.

22211131321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211131321 is an equidigital number, since it uses as much as digits as its factorization.

22211131321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

Adding to 22211131321 its reverse (12313111222), we get a palindrome (34524242543).

The spelling of 22211131321 in words is "twenty-two billion, two hundred eleven million, one hundred thirty-one thousand, three hundred twenty-one".