131101232155212 has 48 divisors (see below), whose sum is σ = 340812487475712. Its totient is φ = 38882377039680.

The previous prime is 131101232155189. The next prime is 131101232155249. The reversal of 131101232155212 is 212551232101131.

It is a super-2 number, since 2×131101232155212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131101232155212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10565857123 + ... + 10565869530.

It is an arithmetic number, because the mean of its divisors is an integer number (7100260155744).

Almost surely, 2^{131101232155212} is an apocalyptic number.

131101232155212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131101232155212 is an abundant number, since it is smaller than the sum of its proper divisors (209711255320500).

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

131101232155212 is a wasteful number, since it uses less digits than its factorization.

131101232155212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21131726718 (or 21131726716 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 131101232155212 its reverse (212551232101131), we get a palindrome (343652464256343).

The spelling of 131101232155212 in words is "one hundred thirty-one trillion, one hundred one billion, two hundred thirty-two million, one hundred fifty-five thousand, two hundred twelve".