111940019221 has 16 divisors (see below), whose sum is σ = 125557594560. Its totient is φ = 99174516480.

The previous prime is 111940019143. The next prime is 111940019267. The reversal of 111940019221 is 122910049111.

It is a cyclic number.

It is not a de Polignac number, because 111940019221 - 2⁹ = 111940018709 is a prime.

It is a super-3 number, since 3×111940019221³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111940019291) 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, 1052995 + ... + 1154416.

It is an arithmetic number, because the mean of its divisors is an integer number (7847349660).

Almost surely, 2^111940019221 is an apocalyptic number.

It is an amenable number.

111940019221 is a deficient number, since it is larger than the sum of its proper divisors (13617575339).

111940019221 is a wasteful number, since it uses less digits than its factorization.

111940019221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207604.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 111940019221 in words is "one hundred eleven billion, nine hundred forty million, nineteen thousand, two hundred twenty-one".