1311122101 has 8 divisors (see below), whose sum is σ = 1326879360. Its totient is φ = 1295387808.

The previous prime is 1311122089. The next prime is 1311122117. The reversal of 1311122101 is 1012211131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311122101 - 2⁵ = 1311122069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311122191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127390 + ... + 137296.

It is an arithmetic number, because the mean of its divisors is an integer number (165859920).

Almost surely, 2^1311122101 is an apocalyptic number.

It is an amenable number.

1311122101 is a deficient number, since it is larger than the sum of its proper divisors (15757259).

1311122101 is an equidigital number, since it uses as much as digits as its factorization.

1311122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1311122101 is about 36209.4200588742. The cubic root of 1311122101 is about 1094.4965057328.

Adding to 1311122101 its reverse (1012211131), we get a palindrome (2323333232).

The spelling of 1311122101 in words is "one billion, three hundred eleven million, one hundred twenty-two thousand, one hundred one".