21000213012322 has 16 divisors (see below), whose sum is σ = 31671479835072. Its totient is φ = 10443201451920.

The previous prime is 21000213012319. The next prime is 21000213012347. The reversal of 21000213012322 is 22321031200012.

It is a self number, because there is not a number n which added to its sum of digits gives 21000213012322.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36812718 + ... + 37378825.

It is an arithmetic number, because the mean of its divisors is an integer number (1979467489692).

Almost surely, 2^{21000213012322} is an apocalyptic number.

21000213012322 is a deficient number, since it is larger than the sum of its proper divisors (10671266822750).

21000213012322 is a wasteful number, since it uses less digits than its factorization.

21000213012322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74192313.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21000213012322 its reverse (22321031200012), we get a palindrome (43321244212334).

The spelling of 21000213012322 in words is "twenty-one trillion, two hundred thirteen million, twelve thousand, three hundred twenty-two".