1111200010001 has 4 divisors (see below), whose sum is σ = 1111203395904. Its totient is φ = 1111196624100.

The previous prime is 1111200009989. The next prime is 1111200010013. The reversal of 1111200010001 is 1000100021111.

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 an interprime number because it is at equal distance from previous prime (1111200009989) and next prime (1111200010013).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111200010001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1111200010051) 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, 1140605 + ... + 1877066.

It is an arithmetic number, because the mean of its divisors is an integer number (277800848976).

Almost surely, 2^{1111200010001} is an apocalyptic number.

It is an amenable number.

1111200010001 is a deficient number, since it is larger than the sum of its proper divisors (3385903).

1111200010001 is an equidigital number, since it uses as much as digits as its factorization.

1111200010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385902.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1111200010001 its reverse (1000100021111), we get a palindrome (2111300031112).

The spelling of 1111200010001 in words is "one trillion, one hundred eleven billion, two hundred million, ten thousand, one".