1111112001 has 48 divisors (see below), whose sum is σ = 1717784640. Its totient is φ = 690094080.

The previous prime is 1111111999. The next prime is 1111112021. The reversal of 1111112001 is 1002111111.

It is not a de Polignac number, because 1111112001 - 2¹ = 1111111999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1111112021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4323265 + ... + 4323521.

It is an arithmetic number, because the mean of its divisors is an integer number (35787180).

Almost surely, 2^1111112001 is an apocalyptic number.

It is an amenable number.

1111112001 is a deficient number, since it is larger than the sum of its proper divisors (606672639).

1111112001 is a wasteful number, since it uses less digits than its factorization.

1111112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 1111112001 is about 33333.3466816640. The cubic root of 1111112001 is about 1035.7444451604.

Adding to 1111112001 its reverse (1002111111), we get a palindrome (2113223112).

The spelling of 1111112001 in words is "one billion, one hundred eleven million, one hundred twelve thousand, one".