11122170012 has 72 divisors (see below), whose sum is σ = 28398661200. Its totient is φ = 3670092288.

The previous prime is 11122169983. The next prime is 11122170019. The reversal of 11122170012 is 21007122111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122170019) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1471908 + ... + 1479444.

It is an arithmetic number, because the mean of its divisors is an integer number (394425850).

Almost surely, 2^11122170012 is an apocalyptic number.

11122170012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11122170012 is an abundant number, since it is smaller than the sum of its proper divisors (17276491188).

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

11122170012 is a wasteful number, since it uses less digits than its factorization.

11122170012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955 (or 7950 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

Adding to 11122170012 its reverse (21007122111), we get a palindrome (32129292123).

The spelling of 11122170012 in words is "eleven billion, one hundred twenty-two million, one hundred seventy thousand, twelve".