220202212021221 has 16 divisors (see below), whose sum is σ = 293726796264000. Its totient is φ = 146739556819968.

The previous prime is 220202212021217. The next prime is 220202212021223. The reversal of 220202212021221 is 122120212202022.

It is not a de Polignac number, because 220202212021221 - 2² = 220202212021217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220202212021223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159446815 + ... + 160821923.

It is an arithmetic number, because the mean of its divisors is an integer number (18357924766500).

Almost surely, 2^{220202212021221} is an apocalyptic number.

It is an amenable number.

220202212021221 is a deficient number, since it is larger than the sum of its proper divisors (73524584242779).

220202212021221 is a wasteful number, since it uses less digits than its factorization.

220202212021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397588.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 220202212021221 its reverse (122120212202022), we get a palindrome (342322424223243).

The spelling of 220202212021221 in words is "two hundred twenty trillion, two hundred two billion, two hundred twelve million, twenty-one thousand, two hundred twenty-one".