1355441110121 has 4 divisors (see below), whose sum is σ = 1549075554432. Its totient is φ = 1161806665812.

The previous prime is 1355441110109. The next prime is 1355441110141. The reversal of 1355441110121 is 1210111445531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1355441110121 - 2⁶ = 1355441110057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355441110141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96817222145 + ... + 96817222158.

It is an arithmetic number, because the mean of its divisors is an integer number (387268888608).

Almost surely, 2^{1355441110121} is an apocalyptic number.

It is an amenable number.

1355441110121 is a deficient number, since it is larger than the sum of its proper divisors (193634444311).

1355441110121 is an equidigital number, since it uses as much as digits as its factorization.

1355441110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193634444310.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 1355441110121 its reverse (1210111445531), we get a palindrome (2565552555652).

The spelling of 1355441110121 in words is "one trillion, three hundred fifty-five billion, four hundred forty-one million, one hundred ten thousand, one hundred twenty-one".