1131123210001 has 4 divisors (see below), whose sum is σ = 1133104161904. Its totient is φ = 1129142258100.

The previous prime is 1131123209963. The next prime is 1131123210047. The reversal of 1131123210001 is 1000123211311.

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 not a de Polignac number, because 1131123210001 - 2²⁹ = 1130586339089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131123210071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990475095 + ... + 990476236.

It is an arithmetic number, because the mean of its divisors is an integer number (283276040476).

Almost surely, 2^{1131123210001} is an apocalyptic number.

It is an amenable number.

1131123210001 is a deficient number, since it is larger than the sum of its proper divisors (1980951903).

1131123210001 is an equidigital number, since it uses as much as digits as its factorization.

1131123210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980951902.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1131123210001 its reverse (1000123211311), we get a palindrome (2131246421312).

The spelling of 1131123210001 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-three million, two hundred ten thousand, one".