131211301101212 has 24 divisors (see below), whose sum is σ = 229896055603200. Its totient is φ = 65526730199856.

The previous prime is 131211301101187. The next prime is 131211301101217. The reversal of 131211301101212 is 212101103112131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211301101217) 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, 30004133 + ... + 34097955.

It is an arithmetic number, because the mean of its divisors is an integer number (9579002316800).

Almost surely, 2^{131211301101212} is an apocalyptic number.

It is an amenable number.

131211301101212 is a deficient number, since it is larger than the sum of its proper divisors (98684754501988).

131211301101212 is a wasteful number, since it uses less digits than its factorization.

131211301101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103465 (or 4103463 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 131211301101212 its reverse (212101103112131), we get a palindrome (343312404213343).

The spelling of 131211301101212 in words is "one hundred thirty-one trillion, two hundred eleven billion, three hundred one million, one hundred one thousand, two hundred twelve".