11011002012 has 36 divisors (see below), whose sum is σ = 28214651920. Its totient is φ = 3620054592.

The previous prime is 11011001957. The next prime is 11011002019. The reversal of 11011002012 is 21020011011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 11011001985 and 11011002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011002019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2092312 + ... + 2097567.

Almost surely, 2^11011002012 is an apocalyptic number.

11011002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11011002012 is an abundant number, since it is smaller than the sum of its proper divisors (17203649908).

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

11011002012 is a wasteful number, since it uses less digits than its factorization.

11011002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189962 (or 4189957 counting only the distinct ones).

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

Adding to 11011002012 its reverse (21020011011), we get a palindrome (32031013023).

The spelling of 11011002012 in words is "eleven billion, eleven million, two thousand, twelve".