12121131982 has 8 divisors (see below), whose sum is σ = 18182704536. Its totient is φ = 6060230472.

The previous prime is 12121131977. The next prime is 12121131983. The reversal of 12121131982 is 28913112121.

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 (12121131983) 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, 119868 + ... + 196495.

It is an arithmetic number, because the mean of its divisors is an integer number (2272838067).

Almost surely, 2^12121131982 is an apocalyptic number.

12121131982 is a deficient number, since it is larger than the sum of its proper divisors (6061572554).

12121131982 is a wasteful number, since it uses less digits than its factorization.

12121131982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335522.

The product of its digits is 1728, while the sum is 31.

The spelling of 12121131982 in words is "twelve billion, one hundred twenty-one million, one hundred thirty-one thousand, nine hundred eighty-two".