12213662142520 has 32 divisors (see below), whose sum is σ = 27509575939920. Its totient is φ = 4880338435840.

The previous prime is 12213662142497. The next prime is 12213662142523. The reversal of 12213662142520 is 2524126631221.

It is a self number, because there is not a number n which added to its sum of digits gives 12213662142520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213662142523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160162066 + ... + 160238305.

Almost surely, 2^{12213662142520} is an apocalyptic number.

12213662142520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213662142520 is an abundant number, since it is smaller than the sum of its proper divisors (15295913797400).

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

12213662142520 is a wasteful number, since it uses less digits than its factorization.

12213662142520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320401335 (or 320401331 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 12213662142520 its reverse (2524126631221), we get a palindrome (14737788773741).

The spelling of 12213662142520 in words is "twelve trillion, two hundred thirteen billion, six hundred sixty-two million, one hundred forty-two thousand, five hundred twenty".