1131021101113 has 4 divisors (see below), whose sum is σ = 1131024778468. Its totient is φ = 1131017423760.

The previous prime is 1131021101107. The next prime is 1131021101141. The reversal of 1131021101113 is 3111011201311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 622326921129 + 508694179984 = 788877^2 + 713228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131021101113 - 2⁵ = 1131021101081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131021101143) 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, 1330518 + ... + 2008063.

It is an arithmetic number, because the mean of its divisors is an integer number (282756194617).

Almost surely, 2^{1131021101113} is an apocalyptic number.

It is an amenable number.

1131021101113 is a deficient number, since it is larger than the sum of its proper divisors (3677355).

1131021101113 is an equidigital number, since it uses as much as digits as its factorization.

1131021101113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677354.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1131021101113 its reverse (3111011201311), we get a palindrome (4242032302424).

The spelling of 1131021101113 in words is "one trillion, one hundred thirty-one billion, twenty-one million, one hundred one thousand, one hundred thirteen".