212123034422 has 16 divisors (see below), whose sum is σ = 343677096672. Its totient is φ = 97612421760.

The previous prime is 212123034377. The next prime is 212123034433. The reversal of 212123034422 is 224430321212.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 212123034391 and 212123034400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12095954 + ... + 12113477.

It is an arithmetic number, because the mean of its divisors is an integer number (21479818542).

Almost surely, 2^212123034422 is an apocalyptic number.

212123034422 is a deficient number, since it is larger than the sum of its proper divisors (131554062250).

212123034422 is a wasteful number, since it uses less digits than its factorization.

212123034422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24209783.

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

Adding to 212123034422 its reverse (224430321212), we get a palindrome (436553355634).

The spelling of 212123034422 in words is "two hundred twelve billion, one hundred twenty-three million, thirty-four thousand, four hundred twenty-two".