100000022281 has 2 divisors, whose sum is σ = 100000022282. Its totient is φ = 100000022280.

The previous prime is 100000022251. The next prime is 100000022321. The reversal of 100000022281 is 182220000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91273473225 + 8726549056 = 302115^2 + 93416^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000022281 - 2⁵ = 100000022249 is a prime.

It is a super-2 number, since 2×100000022281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100000022231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000011140 + 50000011141.

It is an arithmetic number, because the mean of its divisors is an integer number (50000011141).

Almost surely, 2^100000022281 is an apocalyptic number.

It is an amenable number.

100000022281 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000022281 is an equidigital number, since it uses as much as digits as its factorization.

100000022281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100000022281 its reverse (182220000001), we get a palindrome (282220022282).

The spelling of 100000022281 in words is "one hundred billion, twenty-two thousand, two hundred eighty-one".