11901012 has 12 divisors (see below), whose sum is σ = 27769056. Its totient is φ = 3967000.

The previous prime is 11901007. The next prime is 11901017. The reversal of 11901012 is 21010911.

It is an interprime number because it is at equal distance from previous prime (11901007) and next prime (11901017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11900982 and 11901000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11901017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495864 + ... + 495887.

It is an arithmetic number, because the mean of its divisors is an integer number (2314088).

Almost surely, 2^11901012 is an apocalyptic number.

11901012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11901012 is an abundant number, since it is smaller than the sum of its proper divisors (15868044).

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

11901012 is a wasteful number, since it uses less digits than its factorization.

11901012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991758 (or 991756 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 11901012 is about 3449.7843410857. The cubic root of 11901012 is about 228.3115930545.

Adding to 11901012 its reverse (21010911), we get a palindrome (32911923).

The spelling of 11901012 in words is "eleven million, nine hundred one thousand, twelve".