212105220044 has 6 divisors (see below), whose sum is σ = 371184135084. Its totient is φ = 106052610020.

The previous prime is 212105220031. The next prime is 212105220059. The reversal of 212105220044 is 440022501212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26513152502 + ... + 26513152509.

It is an arithmetic number, because the mean of its divisors is an integer number (61864022514).

Almost surely, 2^212105220044 is an apocalyptic number.

It is an amenable number.

212105220044 is a deficient number, since it is larger than the sum of its proper divisors (159078915040).

212105220044 is a wasteful number, since it uses less digits than its factorization.

212105220044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53026305015 (or 53026305013 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 212105220044 its reverse (440022501212), we get a palindrome (652127721256).

The spelling of 212105220044 in words is "two hundred twelve billion, one hundred five million, two hundred twenty thousand, forty-four".