22200111281 has 2 divisors, whose sum is σ = 22200111282. Its totient is φ = 22200111280.

The previous prime is 22200111257. The next prime is 22200111361. The reversal of 22200111281 is 18211100222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18636618256 + 3563493025 = 136516^2 + 59695^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200111281 - 2⁶ = 22200111217 is a prime.

It is a super-2 number, since 2×22200111281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22200111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100055640 + 11100055641.

It is an arithmetic number, because the mean of its divisors is an integer number (11100055641).

Almost surely, 2^22200111281 is an apocalyptic number.

It is an amenable number.

22200111281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200111281 is an equidigital number, since it uses as much as digits as its factorization.

22200111281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 22200111281 in words is "twenty-two billion, two hundred million, one hundred eleven thousand, two hundred eighty-one".