111322220281 has 2 divisors, whose sum is σ = 111322220282. Its totient is φ = 111322220280.

The previous prime is 111322220263. The next prime is 111322220293. The reversal of 111322220281 is 182022223111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74342930281 + 36979290000 = 272659^2 + 192300^2 .

It is a cyclic number.

It is not a de Polignac number, because 111322220281 - 2⁷ = 111322220153 is a prime.

It is a super-2 number, since 2×111322220281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111322220081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55661110140 + 55661110141.

It is an arithmetic number, because the mean of its divisors is an integer number (55661110141).

Almost surely, 2^111322220281 is an apocalyptic number.

It is an amenable number.

111322220281 is a deficient number, since it is larger than the sum of its proper divisors (1).

111322220281 is an equidigital number, since it uses as much as digits as its factorization.

111322220281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 111322220281 its reverse (182022223111), we get a palindrome (293344443392).

The spelling of 111322220281 in words is "one hundred eleven billion, three hundred twenty-two million, two hundred twenty thousand, two hundred eighty-one".