11222331012 has 18 divisors (see below), whose sum is σ = 28367559038. Its totient is φ = 3740776992.

The previous prime is 11222330993. The next prime is 11222331013. The reversal of 11222331012 is 21013322211.

11222331012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7945226496 + 3277104516 = 89136^2 + 57246^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11222331013) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 155865673 + ... + 155865744.

Almost surely, 2^11222331012 is an apocalyptic number.

11222331012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11222331012 is an abundant number, since it is smaller than the sum of its proper divisors (17145228026).

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

11222331012 is a wasteful number, since it uses less digits than its factorization.

11222331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311731427 (or 311731422 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11222331012 its reverse (21013322211), we get a palindrome (32235653223).

The spelling of 11222331012 in words is "eleven billion, two hundred twenty-two million, three hundred thirty-one thousand, twelve".