1111012001 has 4 divisors (see below), whose sum is σ = 1212013104. Its totient is φ = 1010010900.

The previous prime is 1111011989. The next prime is 1111012003. The reversal of 1111012001 is 1002101111.

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 1111012001 - 2¹⁰ = 1111010977 is a prime.

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 1111012001.

It is not an unprimeable number, because it can be changed into a prime (1111012003) 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, 50500535 + ... + 50500556.

It is an arithmetic number, because the mean of its divisors is an integer number (303003276).

Almost surely, 2^1111012001 is an apocalyptic number.

1111012001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111012001 is a deficient number, since it is larger than the sum of its proper divisors (101001103).

1111012001 is a wasteful number, since it uses less digits than its factorization.

1111012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101001102.

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

The square root of 1111012001 is about 33331.8466485132. The cubic root of 1111012001 is about 1035.7133719197.

Adding to 1111012001 its reverse (1002101111), we get a palindrome (2113113112).

The spelling of 1111012001 in words is "one billion, one hundred eleven million, twelve thousand, one".