2100210000023 has 2 divisors, whose sum is σ = 2100210000024. Its totient is φ = 2100210000022.

The previous prime is 2100210000017. The next prime is 2100210000043. The reversal of 2100210000023 is 3200000120012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100210000023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100209999959 and 2100210000013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100210000043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050105000011 + 1050105000012.

It is an arithmetic number, because the mean of its divisors is an integer number (1050105000012).

Almost surely, 2^{2100210000023} is an apocalyptic number.

2100210000023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100210000023 is an equidigital number, since it uses as much as digits as its factorization.

2100210000023 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 11.

Adding to 2100210000023 its reverse (3200000120012), we get a palindrome (5300210120035).

The spelling of 2100210000023 in words is "two trillion, one hundred billion, two hundred ten million, twenty-three", and thus it is an aban number.