212423244442 has 8 divisors (see below), whose sum is σ = 318963020832. Its totient is φ = 106102237500.

The previous prime is 212423244433. The next prime is 212423244461. The reversal of 212423244442 is 244442324212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212423244398 and 212423244407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54689934 + ... + 54693817.

It is an arithmetic number, because the mean of its divisors is an integer number (39870377604).

Almost surely, 2^212423244442 is an apocalyptic number.

212423244442 is a deficient number, since it is larger than the sum of its proper divisors (106539776390).

212423244442 is a wasteful number, since it uses less digits than its factorization.

212423244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109384724.

The product of its digits is 98304, while the sum is 34.

Adding to 212423244442 its reverse (244442324212), we get a palindrome (456865568654).

The spelling of 212423244442 in words is "two hundred twelve billion, four hundred twenty-three million, two hundred forty-four thousand, four hundred forty-two".