11001012012 has 18 divisors (see below), whose sum is σ = 27808113788. Its totient is φ = 3667003992.

The previous prime is 11001011993. The next prime is 11001012031. The reversal of 11001012012 is 21021010011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11001011993) and next prime (11001012031).

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 11001011985 and 11001012003.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 152791798 + ... + 152791869.

Almost surely, 2^11001012012 is an apocalyptic number.

11001012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11001012012 is an abundant number, since it is smaller than the sum of its proper divisors (16807101776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11001012012 is a wasteful number, since it uses less digits than its factorization.

11001012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305583677 (or 305583672 counting only the distinct ones).

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

Adding to 11001012012 its reverse (21021010011), we get a palindrome (32022022023).

The spelling of 11001012012 in words is "eleven billion, one million, twelve thousand, twelve".