111212111219 has 8 divisors (see below), whose sum is σ = 123133084608. Its totient is φ = 99592934760.

The previous prime is 111212111207. The next prime is 111212111239. The reversal of 111212111219 is 912111212111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-111212111219 is a prime.

It is a super-2 number, since 2×111212111219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111212111194 and 111212111203.

It is not an unprimeable number, because it can be changed into a prime (111212111239) 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, 75448457 + ... + 75449930.

It is an arithmetic number, because the mean of its divisors is an integer number (15391635576).

Almost surely, 2^111212111219 is an apocalyptic number.

111212111219 is a deficient number, since it is larger than the sum of its proper divisors (11920973389).

111212111219 is a wasteful number, since it uses less digits than its factorization.

111212111219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150898465.

The product of its digits is 72, while the sum is 23.

The spelling of 111212111219 in words is "one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, two hundred nineteen".