22101220331 has 2 divisors, whose sum is σ = 22101220332. Its totient is φ = 22101220330.

The previous prime is 22101220319. The next prime is 22101220333. The reversal of 22101220331 is 13302210122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22101220331 is a prime.

It is a super-2 number, since 2×22101220331² (a number of 21 digits) contains 22 as substring.

Together with 22101220333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22101220333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050610165 + 11050610166.

It is an arithmetic number, because the mean of its divisors is an integer number (11050610166).

Almost surely, 2^22101220331 is an apocalyptic number.

22101220331 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101220331 is an equidigital number, since it uses as much as digits as its factorization.

22101220331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22101220331 its reverse (13302210122), we get a palindrome (35403430453).

The spelling of 22101220331 in words is "twenty-two billion, one hundred one million, two hundred twenty thousand, three hundred thirty-one".