212257198346 has 8 divisors (see below), whose sum is σ = 319894735584. Its totient is φ = 105625619820.

The previous prime is 212257198339. The next prime is 212257198379. The reversal of 212257198346 is 643891752212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212257198294 and 212257198303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251489150 + ... + 251489993.

It is an arithmetic number, because the mean of its divisors is an integer number (39986841948).

Almost surely, 2^212257198346 is an apocalyptic number.

212257198346 is a deficient number, since it is larger than the sum of its proper divisors (107637537238).

212257198346 is a wasteful number, since it uses less digits than its factorization.

212257198346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502979356.

The product of its digits is 1451520, while the sum is 50.

The spelling of 212257198346 in words is "two hundred twelve billion, two hundred fifty-seven million, one hundred ninety-eight thousand, three hundred forty-six".