1355113531121 has 16 divisors (see below), whose sum is σ = 1551982320000. Its totient is φ = 1159065566208.

The previous prime is 1355113531081. The next prime is 1355113531129. The reversal of 1355113531121 is 1211353115531.

It is a cyclic number.

It is not a de Polignac number, because 1355113531121 - 2³⁴ = 1337933661937 is a prime.

It is a super-4 number, since 4×1355113531121⁴ (a number of 50 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1355113531129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41791511 + ... + 41823923.

It is an arithmetic number, because the mean of its divisors is an integer number (96998895000).

Almost surely, 2^{1355113531121} is an apocalyptic number.

It is an amenable number.

1355113531121 is a deficient number, since it is larger than the sum of its proper divisors (196868788879).

1355113531121 is a wasteful number, since it uses less digits than its factorization.

1355113531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44888.

The product of its digits is 6750, while the sum is 32.

Adding to 1355113531121 its reverse (1211353115531), we get a palindrome (2566466646652).

The spelling of 1355113531121 in words is "one trillion, three hundred fifty-five billion, one hundred thirteen million, five hundred thirty-one thousand, one hundred twenty-one".