12021337215 has 24 divisors (see below), whose sum is σ = 20840442480. Its totient is φ = 6410315904.

The previous prime is 12021337213. The next prime is 12021337231. The reversal of 12021337215 is 51273312021.

It is not a de Polignac number, because 12021337215 - 2¹ = 12021337213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021337213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305116 + ... + 342254.

It is an arithmetic number, because the mean of its divisors is an integer number (868351770).

Almost surely, 2^12021337215 is an apocalyptic number.

12021337215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12021337215 is a deficient number, since it is larger than the sum of its proper divisors (8819105265).

12021337215 is a wasteful number, since it uses less digits than its factorization.

12021337215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44343 (or 44340 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 12021337215 its reverse (51273312021), we get a palindrome (63294649236).

The spelling of 12021337215 in words is "twelve billion, twenty-one million, three hundred thirty-seven thousand, two hundred fifteen".