131121120212 has 24 divisors (see below), whose sum is σ = 234212334720. Its totient is φ = 64211512320.

The previous prime is 131121120199. The next prime is 131121120259. The reversal of 131121120212 is 212021121131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961133 + ... + 1089044.

It is an arithmetic number, because the mean of its divisors is an integer number (9758847280).

Almost surely, 2^131121120212 is an apocalyptic number.

It is an amenable number.

131121120212 is a deficient number, since it is larger than the sum of its proper divisors (103091214508).

131121120212 is a wasteful number, since it uses less digits than its factorization.

131121120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050511 (or 2050509 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 131121120212 its reverse (212021121131), we get a palindrome (343142241343).

The spelling of 131121120212 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".