21222404340110 has 32 divisors (see below), whose sum is σ = 38292580085760. Its totient is φ = 8468462379168.

The previous prime is 21222404340107. The next prime is 21222404340191. The reversal of 21222404340110 is 1104340422212.

It is a self number, because there is not a number n which added to its sum of digits gives 21222404340110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268384439 + ... + 268463501.

It is an arithmetic number, because the mean of its divisors is an integer number (1196643127680).

Almost surely, 2^{21222404340110} is an apocalyptic number.

21222404340110 is a deficient number, since it is larger than the sum of its proper divisors (17070175745650).

21222404340110 is a wasteful number, since it uses less digits than its factorization.

21222404340110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143552.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21222404340110 its reverse (1104340422212), we get a palindrome (22326744762322).

The spelling of 21222404340110 in words is "twenty-one trillion, two hundred twenty-two billion, four hundred four million, three hundred forty thousand, one hundred ten".