21103212322 has 8 divisors (see below), whose sum is σ = 31655619072. Its totient is φ = 10551339300.

The previous prime is 21103212289. The next prime is 21103212331. The reversal of 21103212322 is 22321230112.

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 21103212322.

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, 12754 + ... + 205837.

It is an arithmetic number, because the mean of its divisors is an integer number (3956952384).

Almost surely, 2^21103212322 is an apocalyptic number.

21103212322 is a deficient number, since it is larger than the sum of its proper divisors (10552406750).

21103212322 is a wasteful number, since it uses less digits than its factorization.

21103212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266864.

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

Adding to 21103212322 its reverse (22321230112), we get a palindrome (43424442434).

The spelling of 21103212322 in words is "twenty-one billion, one hundred three million, two hundred twelve thousand, three hundred twenty-two".