220212221221221 has 8 divisors (see below), whose sum is σ = 293715590304864. Its totient is φ = 146758499809200.

The previous prime is 220212221221177. The next prime is 220212221221259. The reversal of 220212221221221 is 122122122212022.

It is a happy number.

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

It is not a de Polignac number, because 220212221221221 - 2⁹ = 220212221220709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220212221221191 and 220212221221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212221222221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12411907555 + ... + 12411925296.

It is an arithmetic number, because the mean of its divisors is an integer number (36714448788108).

Almost surely, 2^{220212221221221} is an apocalyptic number.

It is an amenable number.

220212221221221 is a deficient number, since it is larger than the sum of its proper divisors (73503369083643).

220212221221221 is a wasteful number, since it uses less digits than its factorization.

220212221221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24823835811.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 220212221221221 its reverse (122122122212022), we get a palindrome (342334343433243).

The spelling of 220212221221221 in words is "two hundred twenty trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-one".