212123114542 has 12 divisors (see below), whose sum is σ = 321303867480. Its totient is φ = 105031822908.

The previous prime is 212123114537. The next prime is 212123114591. The reversal of 212123114542 is 245411321212.

It is a happy number.

212123114542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212123114542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4977442 + ... + 5019877.

It is an arithmetic number, because the mean of its divisors is an integer number (26775322290).

Almost surely, 2^212123114542 is an apocalyptic number.

212123114542 is a deficient number, since it is larger than the sum of its proper divisors (109180752938).

212123114542 is an equidigital number, since it uses as much as digits as its factorization.

212123114542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9997527 (or 9997424 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

Adding to 212123114542 its reverse (245411321212), we get a palindrome (457534435754).

The spelling of 212123114542 in words is "two hundred twelve billion, one hundred twenty-three million, one hundred fourteen thousand, five hundred forty-two".