131211132101 has 4 divisors (see below), whose sum is σ = 149955579552. Its totient is φ = 112466684652.

The previous prime is 131211132089. The next prime is 131211132103. The reversal of 131211132101 is 101231112131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101231112131 = 367 ⋅275834093.

It is not a de Polignac number, because 131211132101 - 2³⁰ = 130137390277 is a prime.

It is a super-2 number, since 2×131211132101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131211132101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211132103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9372223715 + ... + 9372223728.

It is an arithmetic number, because the mean of its divisors is an integer number (37488894888).

Almost surely, 2^131211132101 is an apocalyptic number.

It is an amenable number.

131211132101 is a deficient number, since it is larger than the sum of its proper divisors (18744447451).

131211132101 is an equidigital number, since it uses as much as digits as its factorization.

131211132101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18744447450.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131211132101 its reverse (101231112131), we get a palindrome (232442244232).

The spelling of 131211132101 in words is "one hundred thirty-one billion, two hundred eleven million, one hundred thirty-two thousand, one hundred one".