21322220122 has 32 divisors (see below), whose sum is σ = 36720273024. Its totient is φ = 9096192000.

The previous prime is 21322220107. The next prime is 21322220203. The reversal of 21322220122 is 22102222312.

It is a self number, because there is not a number n which added to its sum of digits gives 21322220122.

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 15 ways as a sum of consecutive naturals, for example, 4756122 + ... + 4760602.

It is an arithmetic number, because the mean of its divisors is an integer number (1147508532).

Almost surely, 2^21322220122 is an apocalyptic number.

21322220122 is a deficient number, since it is larger than the sum of its proper divisors (15398052902).

21322220122 is a wasteful number, since it uses less digits than its factorization.

21322220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5974.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21322220122 its reverse (22102222312), we get a palindrome (43424442434).

The spelling of 21322220122 in words is "twenty-one billion, three hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".