11205023205112 has 64 divisors (see below), whose sum is σ = 23063269501440. Its totient is φ = 5061231369600.

The previous prime is 11205023205107. The next prime is 11205023205119. The reversal of 11205023205112 is 21150232050211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205023205119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51577437 + ... + 51794227.

It is an arithmetic number, because the mean of its divisors is an integer number (360363585960).

Almost surely, 2^{11205023205112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11205023205112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11531634750720).

11205023205112 is an abundant number, since it is smaller than the sum of its proper divisors (11858246296328).

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

11205023205112 is a wasteful number, since it uses less digits than its factorization.

11205023205112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220492 (or 220488 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 11205023205112 its reverse (21150232050211), we get a palindrome (32355255255323).

The spelling of 11205023205112 in words is "eleven trillion, two hundred five billion, twenty-three million, two hundred five thousand, one hundred twelve".