1121010111101 has 4 divisors (see below), whose sum is σ = 1127272737600. Its totient is φ = 1114747484604.

The previous prime is 1121010111049. The next prime is 1121010111103. The reversal of 1121010111101 is 1011110101211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121010111101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121010111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131312981 + ... + 3131313338.

It is an arithmetic number, because the mean of its divisors is an integer number (281818184400).

Almost surely, 2^{1121010111101} is an apocalyptic number.

It is an amenable number.

1121010111101 is a deficient number, since it is larger than the sum of its proper divisors (6262626499).

1121010111101 is an equidigital number, since it uses as much as digits as its factorization.

1121010111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6262626498.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1121010111101 its reverse (1011110101211), we get a palindrome (2132120212312).

The spelling of 1121010111101 in words is "one trillion, one hundred twenty-one billion, ten million, one hundred eleven thousand, one hundred one".