220212021021221 has 8 divisors (see below), whose sum is σ = 227831335372800. Its totient is φ = 212594426428720.

The previous prime is 220212021021197. The next prime is 220212021021257. The reversal of 220212021021221 is 122120120212022.

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 220212021021221 - 2¹⁸ = 220212020759077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220212021021193 and 220212021021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212021020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429679241 + ... + 430191438.

It is an arithmetic number, because the mean of its divisors is an integer number (28478916921600).

Almost surely, 2^{220212021021221} is an apocalyptic number.

It is an amenable number.

220212021021221 is a deficient number, since it is larger than the sum of its proper divisors (7619314351579).

220212021021221 is an equidigital number, since it uses as much as digits as its factorization.

220212021021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859879539.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220212021021221 its reverse (122120120212022), we get a palindrome (342332141233243).

The spelling of 220212021021221 in words is "two hundred twenty trillion, two hundred twelve billion, twenty-one million, twenty-one thousand, two hundred twenty-one".