220212200021221 has 8 divisors (see below), whose sum is σ = 220255199265600. Its totient is φ = 220169202231840.

The previous prime is 220212200021201. The next prime is 220212200021237. The reversal of 220212200021221 is 122120002212022.

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

It is a cyclic number.

It is not a de Polignac number, because 220212200021221 - 2⁵ = 220212200021189 is a prime.

It is a super-4 number, since 4×220212200021221⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212200021201) 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, 331732881 + ... + 332396041.

It is an arithmetic number, because the mean of its divisors is an integer number (27531899908200).

Almost surely, 2^{220212200021221} is an apocalyptic number.

It is an amenable number.

220212200021221 is a deficient number, since it is larger than the sum of its proper divisors (42999244379).

220212200021221 is an equidigital number, since it uses as much as digits as its factorization.

220212200021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727499.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220212200021221 its reverse (122120002212022), we get a palindrome (342332202233243).

The spelling of 220212200021221 in words is "two hundred twenty trillion, two hundred twelve billion, two hundred million, twenty-one thousand, two hundred twenty-one".