2120205023 has 2 divisors, whose sum is σ = 2120205024. Its totient is φ = 2120205022.

The previous prime is 2120205019. The next prime is 2120205049. The reversal of 2120205023 is 3205020212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120205023 - 2² = 2120205019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120204992 and 2120205010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120205223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060102511 + 1060102512.

It is an arithmetic number, because the mean of its divisors is an integer number (1060102512).

Almost surely, 2^2120205023 is an apocalyptic number.

2120205023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120205023 is an equidigital number, since it uses as much as digits as its factorization.

2120205023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2120205023 is about 46045.6840865678. The cubic root of 2120205023 is about 1284.6730681758.

Adding to 2120205023 its reverse (3205020212), we get a palindrome (5325225235).

The spelling of 2120205023 in words is "two billion, one hundred twenty million, two hundred five thousand, twenty-three".