212036505 has 16 divisors (see below), whose sum is σ = 346477824. Its totient is φ = 110679680.

The previous prime is 212036479. The next prime is 212036519. The reversal of 212036505 is 505630212.

It is not a de Polignac number, because 212036505 - 2²⁰ = 210987929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149676 + ... + 151085.

It is an arithmetic number, because the mean of its divisors is an integer number (21654864).

Almost surely, 2^212036505 is an apocalyptic number.

It is an amenable number.

212036505 is a deficient number, since it is larger than the sum of its proper divisors (134441319).

212036505 is a wasteful number, since it uses less digits than its factorization.

212036505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300816.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 212036505 is about 14561.4733114476. The cubic root of 212036505 is about 596.3074185790.

Adding to 212036505 its reverse (505630212), we get a palindrome (717666717).

The spelling of 212036505 in words is "two hundred twelve million, thirty-six thousand, five hundred five".