111134142121 has 2 divisors, whose sum is σ = 111134142122. Its totient is φ = 111134142120.

The previous prime is 111134142101. The next prime is 111134142169. The reversal of 111134142121 is 121241431111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108283116096 + 2851026025 = 329064^2 + 53395^2 .

It is an emirp because it is prime and its reverse (121241431111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111134142121 - 2³³ = 102544207529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111134142092 and 111134142101.

It is not a weakly prime, because it can be changed into another prime (111134142101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55567071060 + 55567071061.

It is an arithmetic number, because the mean of its divisors is an integer number (55567071061).

Almost surely, 2^111134142121 is an apocalyptic number.

It is an amenable number.

111134142121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111134142121 is an equidigital number, since it uses as much as digits as its factorization.

111134142121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

Adding to 111134142121 its reverse (121241431111), we get a palindrome (232375573232).

The spelling of 111134142121 in words is "one hundred eleven billion, one hundred thirty-four million, one hundred forty-two thousand, one hundred twenty-one".