111421321131 has 16 divisors (see below), whose sum is σ = 150795675008. Its totient is φ = 73164168000.

The previous prime is 111421321127. The next prime is 111421321133. The reversal of 111421321131 is 131123124111.

It is a happy number.

It is not a de Polignac number, because 111421321131 - 2² = 111421321127 is a prime.

It is a super-2 number, since 2×111421321131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111421321098 and 111421321107.

It is not an unprimeable number, because it can be changed into a prime (111421321133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2212431 + ... + 2262231.

It is an arithmetic number, because the mean of its divisors is an integer number (9424729688).

Almost surely, 2^111421321131 is an apocalyptic number.

111421321131 is a deficient number, since it is larger than the sum of its proper divisors (39374353877).

111421321131 is a wasteful number, since it uses less digits than its factorization.

111421321131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61002.

The product of its digits is 144, while the sum is 21.

Adding to 111421321131 its reverse (131123124111), we get a palindrome (242544445242).

The spelling of 111421321131 in words is "one hundred eleven billion, four hundred twenty-one million, three hundred twenty-one thousand, one hundred thirty-one".