212432368218 has 16 divisors (see below), whose sum is σ = 485559698880. Its totient is φ = 60694962336.

The previous prime is 212432368189. The next prime is 212432368303. The reversal of 212432368218 is 812863234212.

It is a super-2 number, since 2×212432368218² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5057913529 = 212432368218 / (2 + 1 + 2 + 4 + 3 + 2 + 3 + 6 + 8 + 2 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 212432368218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2528956723 + ... + 2528956806.

It is an arithmetic number, because the mean of its divisors is an integer number (30347481180).

Almost surely, 2^212432368218 is an apocalyptic number.

212432368218 is an abundant number, since it is smaller than the sum of its proper divisors (273127330662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212432368218 is a wasteful number, since it uses less digits than its factorization.

212432368218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057913541.

The product of its digits is 221184, while the sum is 42.

The spelling of 212432368218 in words is "two hundred twelve billion, four hundred thirty-two million, three hundred sixty-eight thousand, two hundred eighteen".