1131031122101 has 4 divisors (see below), whose sum is σ = 1131049533612. Its totient is φ = 1131012710592.

The previous prime is 1131031122097. The next prime is 1131031122119. The reversal of 1131031122101 is 1012211301311.

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 182888799025 + 948142323076 = 427655^2 + 973726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131031122101 - 2² = 1131031122097 is a prime.

It is a super-2 number, since 2×1131031122101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131031122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131031122601) 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, 9113300 + ... + 9236573.

It is an arithmetic number, because the mean of its divisors is an integer number (282762383403).

Almost surely, 2^{1131031122101} is an apocalyptic number.

It is an amenable number.

1131031122101 is a deficient number, since it is larger than the sum of its proper divisors (18411511).

1131031122101 is an equidigital number, since it uses as much as digits as its factorization.

1131031122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18411510.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1131031122101 its reverse (1012211301311), we get a palindrome (2143242423412).

The spelling of 1131031122101 in words is "one trillion, one hundred thirty-one billion, thirty-one million, one hundred twenty-two thousand, one hundred one".