11012012001 has 24 divisors (see below), whose sum is σ = 16830213920. Its totient is φ = 6918898176.

The previous prime is 11012011991. The next prime is 11012012023. The reversal of 11012012001 is 10021021011.

It is a happy number.

It is not a de Polignac number, because 11012012001 - 2¹⁹ = 11011487713 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012012041) 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 23 ways as a sum of consecutive naturals, for example, 133831 + ... + 199836.

Almost surely, 2^11012012001 is an apocalyptic number.

It is an amenable number.

11012012001 is a deficient number, since it is larger than the sum of its proper divisors (5818201919).

11012012001 is a wasteful number, since it uses less digits than its factorization.

11012012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333885 (or 333882 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11012012001 its reverse (10021021011), we get a palindrome (21033033012).

It can be divided in two parts, 1101 and 2012001, that added together give a palindrome (2013102).

The spelling of 11012012001 in words is "eleven billion, twelve million, twelve thousand, one".