11211503212 has 72 divisors (see below), whose sum is σ = 24744862800. Its totient is φ = 4405403520.

The previous prime is 11211503207. The next prime is 11211503227. The reversal of 11211503212 is 21230511211.

11211503212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11211503212.

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 in 23 ways as a sum of consecutive naturals, for example, 364887 + ... + 394417.

It is an arithmetic number, because the mean of its divisors is an integer number (343678650).

Almost surely, 2^11211503212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11211503212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12372431400).

11211503212 is an abundant number, since it is smaller than the sum of its proper divisors (13533359588).

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

11211503212 is a wasteful number, since it uses less digits than its factorization.

11211503212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29711 (or 29702 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The spelling of 11211503212 in words is "eleven billion, two hundred eleven million, five hundred three thousand, two hundred twelve".