212203213123 has 24 divisors (see below), whose sum is σ = 234307483200. Its totient is φ = 192037895280.

The previous prime is 212203213067. The next prime is 212203213153. The reversal of 212203213123 is 321312302212.

It is not a de Polignac number, because 212203213123 - 2¹⁷ = 212203082051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212203213094 and 212203213103.

It is not an unprimeable number, because it can be changed into a prime (212203213153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25814508 + ... + 25822726.

It is an arithmetic number, because the mean of its divisors is an integer number (9762811800).

Almost surely, 2^212203213123 is an apocalyptic number.

212203213123 is a deficient number, since it is larger than the sum of its proper divisors (22104270077).

212203213123 is a wasteful number, since it uses less digits than its factorization.

212203213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183 (or 9172 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212203213123 its reverse (321312302212), we get a palindrome (533515515335).

The spelling of 212203213123 in words is "two hundred twelve billion, two hundred three million, two hundred thirteen thousand, one hundred twenty-three".