11212011992 has 8 divisors (see below), whose sum is σ = 21022522500. Its totient is φ = 5606005992.

The previous prime is 11212011971. The next prime is 11212012001. The reversal of 11212011992 is 29911021211.

11212011992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700750742 + ... + 700750757.

Almost surely, 2^11212011992 is an apocalyptic number.

It is an amenable number.

11212011992 is a deficient number, since it is larger than the sum of its proper divisors (9810510508).

11212011992 is a wasteful number, since it uses less digits than its factorization.

11212011992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401501505 (or 1401501501 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 11212011992 in words is "eleven billion, two hundred twelve million, eleven thousand, nine hundred ninety-two".