111214141021 has 4 divisors (see below), whose sum is σ = 111214994044. Its totient is φ = 111213288000.

The previous prime is 111214140937. The next prime is 111214141033. The reversal of 111214141021 is 120141412111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 51683020921 + 59531120100 = 227339^2 + 243990^2 .

It is a cyclic number.

It is not a de Polignac number, because 111214141021 - 2¹⁹ = 111213616733 is a prime.

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 111214141021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111214141081) 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, 185580 + ... + 506821.

It is an arithmetic number, because the mean of its divisors is an integer number (27803748511).

Almost surely, 2^111214141021 is an apocalyptic number.

It is an amenable number.

111214141021 is a deficient number, since it is larger than the sum of its proper divisors (853023).

111214141021 is an equidigital number, since it uses as much as digits as its factorization.

111214141021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853022.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111214141021 its reverse (120141412111), we get a palindrome (231355553132).

The spelling of 111214141021 in words is "one hundred eleven billion, two hundred fourteen million, one hundred forty-one thousand, twenty-one".