212110201123 has 4 divisors (see below), whose sum is σ = 214169523568. Its totient is φ = 210050878680.

The previous prime is 212110201109. The next prime is 212110201129. The reversal of 212110201123 is 321102011212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212110201123 - 2²⁹ = 211573330211 is a prime.

It is a super-2 number, since 2×212110201123² (a number of 23 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 = 212110201097 and 212110201106.

It is not an unprimeable number, because it can be changed into a prime (212110201129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029661068 + ... + 1029661273.

It is an arithmetic number, because the mean of its divisors is an integer number (53542380892).

Almost surely, 2^212110201123 is an apocalyptic number.

212110201123 is a deficient number, since it is larger than the sum of its proper divisors (2059322445).

212110201123 is a wasteful number, since it uses less digits than its factorization.

212110201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059322444.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212110201123 its reverse (321102011212), we get a palindrome (533212212335).

The spelling of 212110201123 in words is "two hundred twelve billion, one hundred ten million, two hundred one thousand, one hundred twenty-three".