220021221221222 has 4 divisors (see below), whose sum is σ = 330031831831836. Its totient is φ = 110010610610610.

The previous prime is 220021221221149. The next prime is 220021221221227. The reversal of 220021221221222 is 222122122120022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021221221227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55005305305304 + ... + 55005305305307.

It is an arithmetic number, because the mean of its divisors is an integer number (82507957957959).

Almost surely, 2^{220021221221222} is an apocalyptic number.

220021221221222 is a deficient number, since it is larger than the sum of its proper divisors (110010610610614).

220021221221222 is a wasteful number, since it uses less digits than its factorization.

220021221221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110010610610613.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 220021221221222 its reverse (222122122120022), we get a palindrome (442143343341244).

The spelling of 220021221221222 in words is "two hundred twenty trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".