221440121322 has 64 divisors (see below), whose sum is σ = 510024345600. Its totient is φ = 62784590400.

The previous prime is 221440121311. The next prime is 221440121359. The reversal of 221440121322 is 223121044122.

It is a super-2 number, since 2×221440121322² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221440121292 and 221440121301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14885304 + ... + 14900172.

It is an arithmetic number, because the mean of its divisors is an integer number (7969130400).

Almost surely, 2^221440121322 is an apocalyptic number.

221440121322 is an abundant number, since it is smaller than the sum of its proper divisors (288584224278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221440121322 is a wasteful number, since it uses less digits than its factorization.

221440121322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221440121322 its reverse (223121044122), we get a palindrome (444561165444).

The spelling of 221440121322 in words is "two hundred twenty-one billion, four hundred forty million, one hundred twenty-one thousand, three hundred twenty-two".