2101100023489 has 2 divisors, whose sum is σ = 2101100023490. Its totient is φ = 2101100023488.

The previous prime is 2101100023433. The next prime is 2101100023501. The reversal of 2101100023489 is 9843200011012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1564770824464 + 536329199025 = 1250908^2 + 732345^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101100023489 - 2³³ = 2092510088897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101100023489.

It is not a weakly prime, because it can be changed into another prime (2101100123489) 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, 1050550011744 + 1050550011745.

It is an arithmetic number, because the mean of its divisors is an integer number (1050550011745).

Almost surely, 2^{2101100023489} is an apocalyptic number.

It is an amenable number.

2101100023489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101100023489 is an equidigital number, since it uses as much as digits as its factorization.

2101100023489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 2101100023489 in words is "two trillion, one hundred one billion, one hundred million, twenty-three thousand, four hundred eighty-nine".