212221200111018 has 16 divisors (see below), whose sum is σ = 485077028825280. Its totient is φ = 60634628603136.

The previous prime is 212221200110977. The next prime is 212221200111029. The reversal of 212221200111018 is 810111002122212.

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, 2526442858423 + ... + 2526442858506.

It is an arithmetic number, because the mean of its divisors is an integer number (30317314301580).

Almost surely, 2^{212221200111018} is an apocalyptic number.

212221200111018 is an abundant number, since it is smaller than the sum of its proper divisors (272855828714262).

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

212221200111018 is a wasteful number, since it uses less digits than its factorization.

212221200111018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052885716941.

The product of its (nonzero) digits is 256, while the sum is 24.

The spelling of 212221200111018 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred million, one hundred eleven thousand, eighteen".