11211211012112 has 40 divisors (see below), whose sum is σ = 21817942799640. Its totient is φ = 5580777231360.

The previous prime is 11211211012037. The next prime is 11211211012207. The reversal of 11211211012112 is 21121011211211.

It can be written as a sum of positive squares in 4 ways, for example, as 3757022396416 + 7454188615696 = 1938304^2 + 2730236^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64300412 + ... + 64474532.

It is an arithmetic number, because the mean of its divisors is an integer number (545448569991).

Almost surely, 2^{11211211012112} is an apocalyptic number.

It is an amenable number.

11211211012112 is a deficient number, since it is larger than the sum of its proper divisors (10606731787528).

11211211012112 is a wasteful number, since it uses less digits than its factorization.

11211211012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191931 (or 191925 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11211211012112 its reverse (21121011211211), we get a palindrome (32332222223323).

The spelling of 11211211012112 in words is "eleven trillion, two hundred eleven billion, two hundred eleven million, twelve thousand, one hundred twelve".