212111232018 has 16 divisors (see below), whose sum is σ = 484825673280. Its totient is φ = 60603209136.

The previous prime is 212111231999. The next prime is 212111232019. The reversal of 212111232018 is 810232111212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212111232019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2525133673 + ... + 2525133756.

It is an arithmetic number, because the mean of its divisors is an integer number (30301604580).

Almost surely, 2^212111232018 is an apocalyptic number.

212111232018 is an abundant number, since it is smaller than the sum of its proper divisors (272714441262).

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

212111232018 is a wasteful number, since it uses less digits than its factorization.

212111232018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050267441.

The product of its (nonzero) digits is 384, while the sum is 24.

The spelling of 212111232018 in words is "two hundred twelve billion, one hundred eleven million, two hundred thirty-two thousand, eighteen".