220221210221021 has 8 divisors (see below), whose sum is σ = 226943312307264. Its totient is φ = 213563434470880.

The previous prime is 220221210221017. The next prime is 220221210221039. The reversal of 220221210221021 is 120122012122022.

220221210221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220221210221021 - 2² = 220221210221017 is a prime.

It is a super-2 number, since 2×220221210221021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220221210220984 and 220221210221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221210221011) 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, 16081577075 + ... + 16081590768.

It is an arithmetic number, because the mean of its divisors is an integer number (28367914038408).

Almost surely, 2^{220221210221021} is an apocalyptic number.

It is an amenable number.

220221210221021 is a deficient number, since it is larger than the sum of its proper divisors (6722102086243).

220221210221021 is a wasteful number, since it uses less digits than its factorization.

220221210221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32163168051.

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

Adding to 220221210221021 its reverse (120122012122022), we get a palindrome (340343222343043).

The spelling of 220221210221021 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, twenty-one".