11111205500212 has 12 divisors (see below), whose sum is σ = 19452922856640. Its totient is φ = 5553227541176.

The previous prime is 11111205500191. The next prime is 11111205500243. The reversal of 11111205500212 is 21200550211111.

It is a happy number.

11111205500212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11111205500212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593791708 + ... + 593810419.

It is an arithmetic number, because the mean of its divisors is an integer number (1621076904720).

Almost surely, 2^{11111205500212} is an apocalyptic number.

It is an amenable number.

11111205500212 is a deficient number, since it is larger than the sum of its proper divisors (8341717356428).

11111205500212 is a wasteful number, since it uses less digits than its factorization.

11111205500212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187604470 (or 1187604468 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 22.

Adding to 11111205500212 its reverse (21200550211111), we get a palindrome (32311755711323).

The spelling of 11111205500212 in words is "eleven trillion, one hundred eleven billion, two hundred five million, five hundred thousand, two hundred twelve".