11012002001 has 48 divisors (see below), whose sum is σ = 15378392064. Its totient is φ = 7664976000.

The previous prime is 11012001997. The next prime is 11012002073. The reversal of 11012002001 is 10020021011.

It is not a de Polignac number, because 11012002001 - 2² = 11012001997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11012002001.

It is not an unprimeable number, because it can be changed into a prime (11012002201) 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, 325211 + ... + 357471.

It is an arithmetic number, because the mean of its divisors is an integer number (320383168).

Almost surely, 2^11012002001 is an apocalyptic number.

11012002001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012002001 is a deficient number, since it is larger than the sum of its proper divisors (4366390063).

11012002001 is a wasteful number, since it uses less digits than its factorization.

11012002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32334 (or 32323 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11012002001 its reverse (10020021011), we get a palindrome (21032023012).

The spelling of 11012002001 in words is "eleven billion, twelve million, two thousand, one".