212011112222123 has 16 divisors (see below), whose sum is σ = 227331777778560. Its totient is φ = 197007224294400.

The previous prime is 212011112222099. The next prime is 212011112222177. The reversal of 212011112222123 is 321222211110212.

It is a cyclic number.

It is not a de Polignac number, because 212011112222123 - 2⁴² = 207613065711019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212011112222423) 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, 36255383 + ... + 41695023.

It is an arithmetic number, because the mean of its divisors is an integer number (14208236111160).

Almost surely, 2^{212011112222123} is an apocalyptic number.

212011112222123 is a deficient number, since it is larger than the sum of its proper divisors (15320665556437).

212011112222123 is a wasteful number, since it uses less digits than its factorization.

212011112222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468758.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 212011112222123 its reverse (321222211110212), we get a palindrome (533233323332335).

The spelling of 212011112222123 in words is "two hundred twelve trillion, eleven billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-three".