2123112299999 has 4 divisors (see below), whose sum is σ = 2123118927480. Its totient is φ = 2123105672520.

The previous prime is 2123112299977. The next prime is 2123112300007. The reversal of 2123112299999 is 9999922113212.

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 2123112299999 - 2⁴⁰ = 1023600672223 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 (2123112299299) 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, 2807429 + ... + 3482510.

It is an arithmetic number, because the mean of its divisors is an integer number (530779731870).

Almost surely, 2^{2123112299999} is an apocalyptic number.

2123112299999 is a deficient number, since it is larger than the sum of its proper divisors (6627481).

2123112299999 is an equidigital number, since it uses as much as digits as its factorization.

2123112299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627480.

The product of its digits is 2834352, while the sum is 59.

The spelling of 2123112299999 in words is "two trillion, one hundred twenty-three billion, one hundred twelve million, two hundred ninety-nine thousand, nine hundred ninety-nine".