21010222322 has 8 divisors (see below), whose sum is σ = 31520500572. Its totient is φ = 10503388800.

The previous prime is 21010222309. The next prime is 21010222391. The reversal of 21010222322 is 22322201012.

It can be written as a sum of positive squares in 2 ways, for example, as 20973122041 + 37100281 = 144821^2 + 6091^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21010222322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845879 + ... + 870362.

Almost surely, 2^21010222322 is an apocalyptic number.

21010222322 is a deficient number, since it is larger than the sum of its proper divisors (10510278250).

21010222322 is a wasteful number, since it uses less digits than its factorization.

21010222322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722364.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21010222322 its reverse (22322201012), we get a palindrome (43332423334).

The spelling of 21010222322 in words is "twenty-one billion, ten million, two hundred twenty-two thousand, three hundred twenty-two".