212243283247 has 4 divisors (see below), whose sum is σ = 212253222096. Its totient is φ = 212233344400.

The previous prime is 212243283233. The next prime is 212243283269. The reversal of 212243283247 is 742382342212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212243283247 is a prime.

It is a super-2 number, since 2×212243283247² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212243284247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4937323 + ... + 4980124.

It is an arithmetic number, because the mean of its divisors is an integer number (53063305524).

Almost surely, 2^212243283247 is an apocalyptic number.

212243283247 is a deficient number, since it is larger than the sum of its proper divisors (9938849).

212243283247 is an equidigital number, since it uses as much as digits as its factorization.

212243283247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938848.

The product of its digits is 258048, while the sum is 40.

The spelling of 212243283247 in words is "two hundred twelve billion, two hundred forty-three million, two hundred eighty-three thousand, two hundred forty-seven".