131212011100 has 36 divisors (see below), whose sum is σ = 284746054600. Its totient is φ = 52481856960.

The previous prime is 131212011083. The next prime is 131212011131. The reversal of 131212011100 is 1110212131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2989111 + ... + 3032689.

Almost surely, 2^131212011100 is an apocalyptic number.

131212011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212011100 is an abundant number, since it is smaller than the sum of its proper divisors (153534043500).

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

131212011100 is a wasteful number, since it uses less digits than its factorization.

131212011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73702 (or 73695 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 131212011100 its reverse (1110212131), we get a palindrome (132322223231).

The spelling of 131212011100 in words is "one hundred thirty-one billion, two hundred twelve million, eleven thousand, one hundred".