111221121219 has 16 divisors (see below), whose sum is σ = 161889827232. Its totient is φ = 67506179328.

The previous prime is 111221121203. The next prime is 111221121223. The reversal of 111221121219 is 912121122111.

It is not a de Polignac number, because 111221121219 - 2⁴ = 111221121203 is a prime.

It is a super-2 number, since 2×111221121219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221121239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19530192 + ... + 19535885.

It is an arithmetic number, because the mean of its divisors is an integer number (10118114202).

Almost surely, 2^111221121219 is an apocalyptic number.

111221121219 is a deficient number, since it is larger than the sum of its proper divisors (50668706013).

111221121219 is a wasteful number, since it uses less digits than its factorization.

111221121219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39066166.

The product of its digits is 144, while the sum is 24.

The spelling of 111221121219 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred nineteen".