21143342302 has 4 divisors (see below), whose sum is σ = 31715013456. Its totient is φ = 10571671150.

The previous prime is 21143342281. The next prime is 21143342317. The reversal of 21143342302 is 20324334112.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 5285835574 + ... + 5285835577.

It is an arithmetic number, because the mean of its divisors is an integer number (7928753364).

Almost surely, 2^21143342302 is an apocalyptic number.

21143342302 is a deficient number, since it is larger than the sum of its proper divisors (10571671154).

21143342302 is a wasteful number, since it uses less digits than its factorization.

21143342302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571671153.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21143342302 its reverse (20324334112), we get a palindrome (41467676414).

The spelling of 21143342302 in words is "twenty-one billion, one hundred forty-three million, three hundred forty-two thousand, three hundred two".