212105032242 has 16 divisors (see below), whose sum is σ = 425411796960. Its totient is φ = 70501388672.

The previous prime is 212105032213. The next prime is 212105032289. The reversal of 212105032242 is 242230501212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50069892 + ... + 50074127.

It is an arithmetic number, because the mean of its divisors is an integer number (26588237310).

Almost surely, 2^212105032242 is an apocalyptic number.

212105032242 is an abundant number, since it is smaller than the sum of its proper divisors (213306764718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212105032242 is a wasteful number, since it uses less digits than its factorization.

212105032242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100144377.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 212105032242 its reverse (242230501212), we get a palindrome (454335533454).

The spelling of 212105032242 in words is "two hundred twelve billion, one hundred five million, thirty-two thousand, two hundred forty-two".