212112120123 has 16 divisors (see below), whose sum is σ = 314270338560. Its totient is φ = 141394507848.

The previous prime is 212112120119. The next prime is 212112120133. The reversal of 212112120123 is 321021211212.

It is not a de Polignac number, because 212112120123 - 2² = 212112120119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212112120096 and 212112120105.

It is not an unprimeable number, because it can be changed into a prime (212112120133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86415 + ... + 657032.

It is an arithmetic number, because the mean of its divisors is an integer number (19641896160).

Almost surely, 2^212112120123 is an apocalyptic number.

212112120123 is a deficient number, since it is larger than the sum of its proper divisors (102158218437).

212112120123 is a wasteful number, since it uses less digits than its factorization.

212112120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754023 (or 754017 counting only the distinct ones).

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

Adding to 212112120123 its reverse (321021211212), we get a palindrome (533133331335).

The spelling of 212112120123 in words is "two hundred twelve billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-three".