220021231222 has 32 divisors (see below), whose sum is σ = 376392465792. Its totient is φ = 95557929984.

The previous prime is 220021231211. The next prime is 220021231279. The reversal of 220021231222 is 222132120022.

It is a super-2 number, since 2×220021231222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220021231222.

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, 2643283 + ... + 2725249.

It is an arithmetic number, because the mean of its divisors is an integer number (11762264556).

Almost surely, 2^220021231222 is an apocalyptic number.

220021231222 is a deficient number, since it is larger than the sum of its proper divisors (156371234570).

220021231222 is a wasteful number, since it uses less digits than its factorization.

220021231222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88072.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 220021231222 its reverse (222132120022), we get a palindrome (442153351244).

The spelling of 220021231222 in words is "two hundred twenty billion, twenty-one million, two hundred thirty-one thousand, two hundred twenty-two".