11212231752 has 36 divisors (see below), whose sum is σ = 30368894595. Its totient is φ = 3737111088.

The previous prime is 11212231741. The next prime is 11212231769. The reversal of 11212231752 is 25713221211.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 5606115876 + 5606115876 = 74874^2 + 74874^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=74874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 892249 + ... + 904727.

Almost surely, 2^11212231752 is an apocalyptic number.

11212231752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11212231752 is an abundant number, since it is smaller than the sum of its proper divisors (19156662843).

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

11212231752 is an frugal number, since it uses more digits than its factorization.

11212231752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24970 (or 12484 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

Adding to 11212231752 its reverse (25713221211), we get a palindrome (36925452963).

The spelling of 11212231752 in words is "eleven billion, two hundred twelve million, two hundred thirty-one thousand, seven hundred fifty-two".