12131321121010 has 64 divisors (see below), whose sum is σ = 26888910499584. Its totient is φ = 3837453408000.

The previous prime is 12131321121001. The next prime is 12131321121019. The reversal of 12131321121010 is 1012112313121.

It is an interprime number because it is at equal distance from previous prime (12131321121001) and next prime (12131321121019).

It is not an unprimeable number, because it can be changed into a prime (12131321121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1484541 + ... + 5144560.

It is an arithmetic number, because the mean of its divisors is an integer number (420139226556).

Almost surely, 2^{12131321121010} is an apocalyptic number.

12131321121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131321121010 is an abundant number, since it is smaller than the sum of its proper divisors (14757589378574).

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

12131321121010 is a wasteful number, since it uses less digits than its factorization.

12131321121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631139.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12131321121010 its reverse (1012112313121), we get a palindrome (13143433434131).

The spelling of 12131321121010 in words is "twelve trillion, one hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-one thousand, ten".