2111301311123 has 4 divisors (see below), whose sum is σ = 2184104804640. Its totient is φ = 2038497817608.

The previous prime is 2111301311111. The next prime is 2111301311131. The reversal of 2111301311123 is 3211131031112.

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 2111301311123 - 2⁶ = 2111301311059 is a prime.

It is a super-2 number, since 2×2111301311123² (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 = 2111301311095 and 2111301311104.

It is not an unprimeable number, because it can be changed into a prime (2111301311153) 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, 36401746715 + ... + 36401746772.

It is an arithmetic number, because the mean of its divisors is an integer number (546026201160).

Almost surely, 2^{2111301311123} is an apocalyptic number.

2111301311123 is a deficient number, since it is larger than the sum of its proper divisors (72803493517).

2111301311123 is an equidigital number, since it uses as much as digits as its factorization.

2111301311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72803493516.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 2111301311123 its reverse (3211131031112), we get a palindrome (5322432342235).

The spelling of 2111301311123 in words is "two trillion, one hundred eleven billion, three hundred one million, three hundred eleven thousand, one hundred twenty-three".