1001220001123 has 2 divisors, whose sum is σ = 1001220001124. Its totient is φ = 1001220001122.

The previous prime is 1001220001097. The next prime is 1001220001129. The reversal of 1001220001123 is 3211000221001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001220001123 - 2⁹ = 1001220000611 is a prime.

It is a super-2 number, since 2×1001220001123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001220001129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500610000561 + 500610000562.

It is an arithmetic number, because the mean of its divisors is an integer number (500610000562).

Almost surely, 2^{1001220001123} is an apocalyptic number.

1001220001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001220001123 is an equidigital number, since it uses as much as digits as its factorization.

1001220001123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1001220001123 its reverse (3211000221001), we get a palindrome (4212220222124).

The spelling of 1001220001123 in words is "one trillion, one billion, two hundred twenty million, one thousand, one hundred twenty-three".