220121320322 has 4 divisors (see below), whose sum is σ = 330181980486. Its totient is φ = 110060660160.

The previous prime is 220121320277. The next prime is 220121320409. The reversal of 220121320322 is 223023121022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143769130561 + 76352189761 = 379169^2 + 276319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220121320294 and 220121320303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55030330079 + ... + 55030330082.

Almost surely, 2^220121320322 is an apocalyptic number.

220121320322 is a deficient number, since it is larger than the sum of its proper divisors (110060660164).

220121320322 is a wasteful number, since it uses less digits than its factorization.

220121320322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110060660163.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 220121320322 its reverse (223023121022), we get a palindrome (443144441344).

The spelling of 220121320322 in words is "two hundred twenty billion, one hundred twenty-one million, three hundred twenty thousand, three hundred twenty-two".