212140240112123 has 8 divisors (see below), whose sum is σ = 214525266276240. Its totient is φ = 209755245680640.

The previous prime is 212140240112089. The next prime is 212140240112153. The reversal of 212140240112123 is 321211042041212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212140240112123 is a prime.

It is a super-2 number, since 2×212140240112123² (a number of 29 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 = 212140240112092 and 212140240112101.

It is not an unprimeable number, because it can be changed into a prime (212140240112153) 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, 5642336 + ... + 21356882.

It is an arithmetic number, because the mean of its divisors is an integer number (26815658284530).

Almost surely, 2^{212140240112123} is an apocalyptic number.

212140240112123 is a deficient number, since it is larger than the sum of its proper divisors (2385026164117).

212140240112123 is a wasteful number, since it uses less digits than its factorization.

212140240112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15866317.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 212140240112123 its reverse (321211042041212), we get a palindrome (533351282153335).

The spelling of 212140240112123 in words is "two hundred twelve trillion, one hundred forty billion, two hundred forty million, one hundred twelve thousand, one hundred twenty-three".