21000313322 has 16 divisors (see below), whose sum is σ = 32537836032. Its totient is φ = 10154810160.

The previous prime is 21000313307. The next prime is 21000313363. The reversal of 21000313322 is 22331300012.

It is a super-3 number, since 3×21000313322³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21000313322.

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, 14093 + ... + 205424.

It is an arithmetic number, because the mean of its divisors is an integer number (2033614752).

Almost surely, 2^21000313322 is an apocalyptic number.

21000313322 is a deficient number, since it is larger than the sum of its proper divisors (11537522710).

21000313322 is a wasteful number, since it uses less digits than its factorization.

21000313322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221093.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21000313322 its reverse (22331300012), we get a palindrome (43331613334).

The spelling of 21000313322 in words is "twenty-one billion, three hundred thirteen thousand, three hundred twenty-two".