212215334245 has 16 divisors (see below), whose sum is σ = 255492881280. Its totient is φ = 169216565184.

The previous prime is 212215334231. The next prime is 212215334251. The reversal of 212215334245 is 542433512212.

It is a cyclic number.

It is not a de Polignac number, because 212215334245 - 2⁷ = 212215334117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212215334245.

It is a congruent number.

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, 2776714 + ... + 2852116.

It is an arithmetic number, because the mean of its divisors is an integer number (15968305080).

Almost surely, 2^212215334245 is an apocalyptic number.

It is an amenable number.

212215334245 is a deficient number, since it is larger than the sum of its proper divisors (43277547035).

212215334245 is a wasteful number, since it uses less digits than its factorization.

212215334245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77244.

The product of its digits is 57600, while the sum is 34.

Adding to 212215334245 its reverse (542433512212), we get a palindrome (754648846457).

The spelling of 212215334245 in words is "two hundred twelve billion, two hundred fifteen million, three hundred thirty-four thousand, two hundred forty-five".