2100420104323 has 4 divisors (see below), whose sum is σ = 2104697946168. Its totient is φ = 2096142262480.

The previous prime is 2100420104257. The next prime is 2100420104329. The reversal of 2100420104323 is 3234010240012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100420104323 - 2¹⁷ = 2100419973251 is a prime.

It is a super-2 number, since 2×2100420104323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100420104294 and 2100420104303.

It is not an unprimeable number, because it can be changed into a prime (2100420104329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138920186 + ... + 2138921167.

It is an arithmetic number, because the mean of its divisors is an integer number (526174486542).

Almost surely, 2^{2100420104323} is an apocalyptic number.

2100420104323 is a deficient number, since it is larger than the sum of its proper divisors (4277841845).

2100420104323 is an equidigital number, since it uses as much as digits as its factorization.

2100420104323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277841844.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 2100420104323 its reverse (3234010240012), we get a palindrome (5334430344335).

The spelling of 2100420104323 in words is "two trillion, one hundred billion, four hundred twenty million, one hundred four thousand, three hundred twenty-three".