131211221302200 has 96 divisors (see below), whose sum is σ = 438043615758000. Its totient is φ = 32298146780160.

The previous prime is 131211221302121. The next prime is 131211221302201. The reversal of 131211221302200 is 2203122112131.

It is a super-2 number, since 2×131211221302200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211221302201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8410967925 + ... + 8410983524.

Almost surely, 2^{131211221302200} is an apocalyptic number.

131211221302200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131211221302200 is an abundant number, since it is smaller than the sum of its proper divisors (306832394455800).

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

131211221302200 is a wasteful number, since it uses less digits than its factorization.

131211221302200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16821951481 (or 16821951472 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 131211221302200 its reverse (2203122112131), we get a palindrome (133414343414331).

The spelling of 131211221302200 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred twenty-one million, three hundred two thousand, two hundred".