2221100023 has 2 divisors, whose sum is σ = 2221100024. Its totient is φ = 2221100022.

The previous prime is 2221099999. The next prime is 2221100071. The reversal of 2221100023 is 3200011222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221100023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221099976 and 2221100012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221100423) 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, 1110550011 + 1110550012.

It is an arithmetic number, because the mean of its divisors is an integer number (1110550012).

Almost surely, 2^2221100023 is an apocalyptic number.

2221100023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221100023 is an equidigital number, since it uses as much as digits as its factorization.

2221100023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2221100023 is about 47128.5478558379. The cubic root of 2221100023 is about 1304.7361803323.

Adding to 2221100023 its reverse (3200011222), we get a palindrome (5421111245).

The spelling of 2221100023 in words is "two billion, two hundred twenty-one million, one hundred thousand, twenty-three".