2111211123123 has 8 divisors (see below), whose sum is σ = 2815018204608. Its totient is φ = 1407439061864.

The previous prime is 2111211123113. The next prime is 2111211123169. The reversal of 2111211123123 is 3213211121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2111211123123 - 2⁴ = 2111211123107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111211123123.

It is not an unprimeable number, because it can be changed into a prime (2111211123113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8614065 + ... + 8855762.

It is an arithmetic number, because the mean of its divisors is an integer number (351877275576).

Almost surely, 2^{2111211123123} is an apocalyptic number.

2111211123123 is a deficient number, since it is larger than the sum of its proper divisors (703807081485).

2111211123123 is a wasteful number, since it uses less digits than its factorization.

2111211123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17510113.

The product of its digits is 144, while the sum is 21.

Adding to 2111211123123 its reverse (3213211121112), we get a palindrome (5324422244235).

The spelling of 2111211123123 in words is "two trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-three thousand, one hundred twenty-three".