2123013013109 has 4 divisors (see below), whose sum is σ = 2127849034080. Its totient is φ = 2118176992140.

The previous prime is 2123013012979. The next prime is 2123013013151. The reversal of 2123013013109 is 9013103103212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2123013013109 - 2⁸ = 2123013012853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123013013169) 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, 2418009827 + ... + 2418010704.

It is an arithmetic number, because the mean of its divisors is an integer number (531962258520).

Almost surely, 2^{2123013013109} is an apocalyptic number.

It is an amenable number.

2123013013109 is a deficient number, since it is larger than the sum of its proper divisors (4836020971).

2123013013109 is an equidigital number, since it uses as much as digits as its factorization.

2123013013109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836020970.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 2123013013109 in words is "two trillion, one hundred twenty-three billion, thirteen million, thirteen thousand, one hundred nine".