220121222 has 8 divisors (see below), whose sum is σ = 332285376. Its totient is φ = 109359432.

The previous prime is 220121203. The next prime is 220121233. The reversal of 220121222 is 222121022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 220121197 and 220121206.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 350198 + ... + 350825.

It is an arithmetic number, because the mean of its divisors is an integer number (41535672).

Almost surely, 2^220121222 is an apocalyptic number.

220121222 is a deficient number, since it is larger than the sum of its proper divisors (112164154).

220121222 is a wasteful number, since it uses less digits than its factorization.

220121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701182.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 220121222 is about 14836.4828042228. The cubic root of 220121222 is about 603.7919312410.

Adding to 220121222 its reverse (222121022), we get a palindrome (442242244).

The spelling of 220121222 in words is "two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".