131221120334 has 8 divisors (see below), whose sum is σ = 196835700888. Its totient is φ = 65609220040.

The previous prime is 131221120309. The next prime is 131221120339. The reversal of 131221120334 is 433021122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221120339) 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, 542837 + ... + 746400.

It is an arithmetic number, because the mean of its divisors is an integer number (24604462611).

Almost surely, 2^131221120334 is an apocalyptic number.

131221120334 is a deficient number, since it is larger than the sum of its proper divisors (65614580554).

131221120334 is a wasteful number, since it uses less digits than its factorization.

131221120334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340130.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 131221120334 its reverse (433021122131), we get a palindrome (564242242465).

The spelling of 131221120334 in words is "one hundred thirty-one billion, two hundred twenty-one million, one hundred twenty thousand, three hundred thirty-four".