20121232342 has 8 divisors (see below), whose sum is σ = 31222602000. Its totient is φ = 9713698344.

The previous prime is 20121232331. The next prime is 20121232349. The reversal of 20121232342 is 24323212102.

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 (20121232349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 173458842 + ... + 173458957.

It is an arithmetic number, because the mean of its divisors is an integer number (3902825250).

Almost surely, 2^20121232342 is an apocalyptic number.

20121232342 is a deficient number, since it is larger than the sum of its proper divisors (11101369658).

20121232342 is a wasteful number, since it uses less digits than its factorization.

20121232342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346917830.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20121232342 its reverse (24323212102), we get a palindrome (44444444444).

The spelling of 20121232342 in words is "twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred forty-two".