212111110219 has 4 divisors (see below), whose sum is σ = 212113309096. Its totient is φ = 212108911344.

The previous prime is 212111110199. The next prime is 212111110291. The reversal of 212111110219 is 912011111212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212111110219 - 2¹¹ = 212111108171 is a prime.

It is a super-2 number, since 2×212111110219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212111110219.

It is not an unprimeable number, because it can be changed into a prime (212111110019) 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, 947769 + ... + 1149994.

It is an arithmetic number, because the mean of its divisors is an integer number (53028327274).

Almost surely, 2^212111110219 is an apocalyptic number.

212111110219 is a deficient number, since it is larger than the sum of its proper divisors (2198877).

212111110219 is a wasteful number, since it uses less digits than its factorization.

212111110219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198876.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 212111110219 in words is "two hundred twelve billion, one hundred eleven million, one hundred ten thousand, two hundred nineteen".