12021313152 has 32 divisors (see below), whose sum is σ = 31931614080. Its totient is φ = 4007104256.

The previous prime is 12021313049. The next prime is 12021313153. The reversal of 12021313152 is 25131312021.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (12021313153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15652368 + ... + 15653135.

It is an arithmetic number, because the mean of its divisors is an integer number (997862940).

Almost surely, 2^12021313152 is an apocalyptic number.

12021313152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021313152 is an abundant number, since it is smaller than the sum of its proper divisors (19910300928).

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

12021313152 is an equidigital number, since it uses as much as digits as its factorization.

12021313152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31305520 (or 31305508 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 12021313152 its reverse (25131312021), we get a palindrome (37152625173).

The spelling of 12021313152 in words is "twelve billion, twenty-one million, three hundred thirteen thousand, one hundred fifty-two".