111121234131 has 8 divisors (see below), whose sum is σ = 148523900560. Its totient is φ = 73899695232.

The previous prime is 111121234129. The next prime is 111121234153. The reversal of 111121234131 is 131432121111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111121234131 - 2¹ = 111121234129 is a prime.

It is a super-2 number, since 2×111121234131² (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 = 111121234098 and 111121234107.

It is not an unprimeable number, because it can be changed into a prime (111121234181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45280450 + ... + 45282903.

It is an arithmetic number, because the mean of its divisors is an integer number (18565487570).

Almost surely, 2^111121234131 is an apocalyptic number.

111121234131 is a deficient number, since it is larger than the sum of its proper divisors (37402666429).

111121234131 is an equidigital number, since it uses as much as digits as its factorization.

111121234131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90563765.

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

Adding to 111121234131 its reverse (131432121111), we get a palindrome (242553355242).

The spelling of 111121234131 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thirty-four thousand, one hundred thirty-one".