2121331142342 has 4 divisors (see below), whose sum is σ = 3181996713516. Its totient is φ = 1060665571170.

The previous prime is 2121331142299. The next prime is 2121331142351. The reversal of 2121331142342 is 2432411331212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530332785584 + ... + 530332785587.

It is an arithmetic number, because the mean of its divisors is an integer number (795499178379).

Almost surely, 2^{2121331142342} is an apocalyptic number.

2121331142342 is a deficient number, since it is larger than the sum of its proper divisors (1060665571174).

2121331142342 is a wasteful number, since it uses less digits than its factorization.

2121331142342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060665571173.

The product of its digits is 6912, while the sum is 29.

Adding to 2121331142342 its reverse (2432411331212), we get a palindrome (4553742473554).

The spelling of 2121331142342 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-one million, one hundred forty-two thousand, three hundred forty-two".