21200031322 has 8 divisors (see below), whose sum is σ = 33670638036. Its totient is φ = 9976485312.

The previous prime is 21200031301. The next prime is 21200031343. The reversal of 21200031322 is 22313000212.

It is an interprime number because it is at equal distance from previous prime (21200031301) and next prime (21200031343).

It can be written as a sum of positive squares in 2 ways, for example, as 16713576961 + 4486454361 = 129281^2 + 66981^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21200031296 and 21200031305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311765133 + ... + 311765200.

Almost surely, 2^21200031322 is an apocalyptic number.

21200031322 is a deficient number, since it is larger than the sum of its proper divisors (12470606714).

21200031322 is a wasteful number, since it uses less digits than its factorization.

21200031322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623530352.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21200031322 its reverse (22313000212), we get a palindrome (43513031534).

The spelling of 21200031322 in words is "twenty-one billion, two hundred million, thirty-one thousand, three hundred twenty-two".