111144014311021 has 4 divisors (see below), whose sum is σ = 112223082411232. Its totient is φ = 110064946210812.

The previous prime is 111144014310991. The next prime is 111144014311069. The reversal of 111144014311021 is 120113410441111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111144014311021 - 2³⁷ = 111006575357549 is a prime.

It is a super-3 number, since 3×111144014311021³ (a number of 43 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 (111144014311081) 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, 539534049951 + ... + 539534050156.

It is an arithmetic number, because the mean of its divisors is an integer number (28055770602808).

Almost surely, 2^{111144014311021} is an apocalyptic number.

It is an amenable number.

111144014311021 is a deficient number, since it is larger than the sum of its proper divisors (1079068100211).

111144014311021 is a wasteful number, since it uses less digits than its factorization.

111144014311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079068100210.

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 111144014311021 its reverse (120113410441111), we get a palindrome (231257424752132).

The spelling of 111144014311021 in words is "one hundred eleven trillion, one hundred forty-four billion, fourteen million, three hundred eleven thousand, twenty-one".