21313221122 has 16 divisors (see below), whose sum is σ = 33118585344. Its totient is φ = 10276140000.

The previous prime is 21313221121. The next prime is 21313221133. The reversal of 21313221122 is 22112231312.

It is a junction number, because it is equal to n+sod(n) for n = 21313221094 and 21313221103.

It is not an unprimeable number, because it can be changed into a prime (21313221121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594254 + ... + 629097.

It is an arithmetic number, because the mean of its divisors is an integer number (2069911584).

Almost surely, 2^21313221122 is an apocalyptic number.

21313221122 is a deficient number, since it is larger than the sum of its proper divisors (11805364222).

21313221122 is a wasteful number, since it uses less digits than its factorization.

21313221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223665.

The product of its digits is 288, while the sum is 20.

Adding to 21313221122 its reverse (22112231312), we get a palindrome (43425452434).

The spelling of 21313221122 in words is "twenty-one billion, three hundred thirteen million, two hundred twenty-one thousand, one hundred twenty-two".