212432222123 has 4 divisors (see below), whose sum is σ = 231744242328. Its totient is φ = 193120201920.

The previous prime is 212432222089. The next prime is 212432222143. The reversal of 212432222123 is 321222234212.

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 212432222123 - 2²⁰ = 212431173547 is a prime.

It is a super-2 number, since 2×212432222123² (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 = 212432222092 and 212432222101.

It is not an unprimeable number, because it can be changed into a prime (212432222143) 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, 9656010086 + ... + 9656010107.

It is an arithmetic number, because the mean of its divisors is an integer number (57936060582).

Almost surely, 2^212432222123 is an apocalyptic number.

212432222123 is a deficient number, since it is larger than the sum of its proper divisors (19312020205).

212432222123 is a wasteful number, since it uses less digits than its factorization.

212432222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19312020204.

The product of its digits is 4608, while the sum is 26.

Adding to 212432222123 its reverse (321222234212), we get a palindrome (533654456335).

The spelling of 212432222123 in words is "two hundred twelve billion, four hundred thirty-two million, two hundred twenty-two thousand, one hundred twenty-three".