111000131421 has 4 divisors (see below), whose sum is σ = 148000175232. Its totient is φ = 74000087612.

The previous prime is 111000131413. The next prime is 111000131471. The reversal of 111000131421 is 124131000111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124131000111 = 3 ⋅41377000037.

It is a cyclic number.

It is not a de Polignac number, because 111000131421 - 2³ = 111000131413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111000131421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000131471) 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, 18500021901 + ... + 18500021906.

It is an arithmetic number, because the mean of its divisors is an integer number (37000043808).

Almost surely, 2^111000131421 is an apocalyptic number.

It is an amenable number.

111000131421 is a deficient number, since it is larger than the sum of its proper divisors (37000043811).

111000131421 is an equidigital number, since it uses as much as digits as its factorization.

111000131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37000043810.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111000131421 its reverse (124131000111), we get a palindrome (235131131532).

The spelling of 111000131421 in words is "one hundred eleven billion, one hundred thirty-one thousand, four hundred twenty-one".