2142111123 has 32 divisors (see below), whose sum is σ = 3242306880. Its totient is φ = 1397260800.

The previous prime is 2142111047. The next prime is 2142111131. The reversal of 2142111123 is 3211112412.

It is not a de Polignac number, because 2142111123 - 2⁹ = 2142110611 is a prime.

It is a super-2 number, since 2×2142111123² = 9177280126560642258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2142111096 and 2142111105.

It is not an unprimeable number, because it can be changed into a prime (2142111173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571965 + ... + 575697.

It is an arithmetic number, because the mean of its divisors is an integer number (101322090).

Almost surely, 2^2142111123 is an apocalyptic number.

2142111123 is a deficient number, since it is larger than the sum of its proper divisors (1100195757).

2142111123 is a wasteful number, since it uses less digits than its factorization.

2142111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196 (or 4190 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 2142111123 is about 46282.9463517611. The cubic root of 2142111123 is about 1289.0823598316.

Adding to 2142111123 its reverse (3211112412), we get a palindrome (5353223535).

The spelling of 2142111123 in words is "two billion, one hundred forty-two million, one hundred eleven thousand, one hundred twenty-three".