1211101121313 has 24 divisors (see below), whose sum is σ = 1778472847008. Its totient is φ = 794008524672.

The previous prime is 1211101121303. The next prime is 1211101121369. The reversal of 1211101121313 is 3131211011121.

1211101121313 is a `hidden beast` number, since 121 + 110 + 1 + 121 + 313 = 666.

It is not a de Polignac number, because 1211101121313 - 2⁵ = 1211101121281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211101121303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1335895 + ... + 2051052.

It is an arithmetic number, because the mean of its divisors is an integer number (74103035292).

Almost surely, 2^{1211101121313} is an apocalyptic number.

It is an amenable number.

1211101121313 is a deficient number, since it is larger than the sum of its proper divisors (567371725695).

1211101121313 is a wasteful number, since it uses less digits than its factorization.

1211101121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387613 (or 3387610 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1211101121313 its reverse (3131211011121), we get a palindrome (4342312132434).

The spelling of 1211101121313 in words is "one trillion, two hundred eleven billion, one hundred one million, one hundred twenty-one thousand, three hundred thirteen".