11211931828 has 12 divisors (see below), whose sum is σ = 19857277440. Its totient is φ = 5538423992.

The previous prime is 11211931793. The next prime is 11211931849. The reversal of 11211931828 is 82813911211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16885108 + ... + 16885771.

It is an arithmetic number, because the mean of its divisors is an integer number (1654773120).

Almost surely, 2^11211931828 is an apocalyptic number.

It is an amenable number.

11211931828 is a deficient number, since it is larger than the sum of its proper divisors (8645345612).

11211931828 is a wasteful number, since it uses less digits than its factorization.

11211931828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33770966 (or 33770964 counting only the distinct ones).

The product of its digits is 6912, while the sum is 37.

The spelling of 11211931828 in words is "eleven billion, two hundred eleven million, nine hundred thirty-one thousand, eight hundred twenty-eight".