212205072550 has 24 divisors (see below), whose sum is σ = 397714435272. Its totient is φ = 84234072000.

The previous prime is 212205072533. The next prime is 212205072601. The reversal of 212205072550 is 55270502212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16192311 + ... + 16205410.

It is an arithmetic number, because the mean of its divisors is an integer number (16571434803).

Almost surely, 2^212205072550 is an apocalyptic number.

212205072550 is a deficient number, since it is larger than the sum of its proper divisors (185509362722).

212205072550 is a wasteful number, since it uses less digits than its factorization.

212205072550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32397864 (or 32397859 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

Adding to 212205072550 its reverse (55270502212), we get a palindrome (267475574762).

The spelling of 212205072550 in words is "two hundred twelve billion, two hundred five million, seventy-two thousand, five hundred fifty".