3531113442121 has 2 divisors, whose sum is σ = 3531113442122. Its totient is φ = 3531113442120.

The previous prime is 3531113442079. The next prime is 3531113442127. The reversal of 3531113442121 is 1212443111353.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3531110765625 + 2676496 = 1879125^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 3531113442121 - 2²³ = 3531105053513 is a prime.

It is a super-2 number, since 2×3531113442121² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3531113442127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765556721060 + 1765556721061.

It is an arithmetic number, because the mean of its divisors is an integer number (1765556721061).

Almost surely, 2^{3531113442121} is an apocalyptic number.

It is an amenable number.

3531113442121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531113442121 is an equidigital number, since it uses as much as digits as its factorization.

3531113442121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

Adding to 3531113442121 its reverse (1212443111353), we get a palindrome (4743556553474).

The spelling of 3531113442121 in words is "three trillion, five hundred thirty-one billion, one hundred thirteen million, four hundred forty-two thousand, one hundred twenty-one".