11100010021172 has 6 divisors (see below), whose sum is σ = 19425017537058. Its totient is φ = 5550005010584.

The previous prime is 11100010021171. The next prime is 11100010021237. The reversal of 11100010021172 is 27112001000111.

It can be written as a sum of positive squares in only one way, i.e., 10259183376016 + 840826645156 = 3202996^2 + 916966^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11100010021172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100010021171) 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 as a sum of consecutive naturals, namely, 1387501252643 + ... + 1387501252650.

It is an arithmetic number, because the mean of its divisors is an integer number (3237502922843).

Almost surely, 2^{11100010021172} is an apocalyptic number.

It is an amenable number.

11100010021172 is a deficient number, since it is larger than the sum of its proper divisors (8325007515886).

11100010021172 is a wasteful number, since it uses less digits than its factorization.

11100010021172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775002505297 (or 2775002505295 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 11100010021172 its reverse (27112001000111), we get a palindrome (38212011021283).

The spelling of 11100010021172 in words is "eleven trillion, one hundred billion, ten million, twenty-one thousand, one hundred seventy-two".