2101020023 has 2 divisors, whose sum is σ = 2101020024. Its totient is φ = 2101020022.

The previous prime is 2101019993. The next prime is 2101020049. The reversal of 2101020023 is 3200201012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101020023 - 2²² = 2096825719 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101019986 and 2101020013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101020923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050510011 + 1050510012.

It is an arithmetic number, because the mean of its divisors is an integer number (1050510012).

Almost surely, 2^2101020023 is an apocalyptic number.

2101020023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101020023 is an equidigital number, since it uses as much as digits as its factorization.

2101020023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2101020023 is about 45836.8849617860. The cubic root of 2101020023 is about 1280.7864679670.

Adding to 2101020023 its reverse (3200201012), we get a palindrome (5301221035).

The spelling of 2101020023 in words is "two billion, one hundred one million, twenty thousand, twenty-three".