21321434002 has 8 divisors (see below), whose sum is σ = 34889619312. Its totient is φ = 9691560900.

The previous prime is 21321433999. The next prime is 21321434011. The reversal of 21321434002 is 20043412312.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 969156091 = 21321434002 / (2 + 1 + 3 + 2 + 1 + 4 + 3 + 4 + 0 + 0 + 2).

It is an unprimeable number.

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, 484578024 + ... + 484578067.

It is an arithmetic number, because the mean of its divisors is an integer number (4361202414).

Almost surely, 2^21321434002 is an apocalyptic number.

21321434002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21321434002 is a deficient number, since it is larger than the sum of its proper divisors (13568185310).

21321434002 is a wasteful number, since it uses less digits than its factorization.

21321434002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969156104.

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

Adding to 21321434002 its reverse (20043412312), we get a palindrome (41364846314).

The spelling of 21321434002 in words is "twenty-one billion, three hundred twenty-one million, four hundred thirty-four thousand, two".