1121111201101 has 4 divisors (see below), whose sum is σ = 1128635437500. Its totient is φ = 1113586964704.

The previous prime is 1121111201027. The next prime is 1121111201149. The reversal of 1121111201101 is 1011021111211.

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 216691181001 + 904420020100 = 465501^2 + 951010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121111201101 is a prime.

It is a super-2 number, since 2×1121111201101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121111201401) 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, 3762117976 + ... + 3762118273.

It is an arithmetic number, because the mean of its divisors is an integer number (282158859375).

Almost surely, 2^{1121111201101} is an apocalyptic number.

It is an amenable number.

1121111201101 is a deficient number, since it is larger than the sum of its proper divisors (7524236399).

1121111201101 is an equidigital number, since it uses as much as digits as its factorization.

1121111201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524236398.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1121111201101 its reverse (1011021111211), we get a palindrome (2132132312312).

The spelling of 1121111201101 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred one thousand, one hundred one".