220221211021021 has 16 divisors (see below), whose sum is σ = 252782855418240. Its totient is φ = 187936385060160.

The previous prime is 220221211020977. The next prime is 220221211021037. The reversal of 220221211021021 is 120120112122022.

220221211021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 220221211021021 - 2¹⁵ = 220221210988253 is a prime.

It is a super-2 number, since 2×220221211021021² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220221211021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221211021121) 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, 58618791 + ... + 62262388.

It is an arithmetic number, because the mean of its divisors is an integer number (15798928463640).

Almost surely, 2^{220221211021021} is an apocalyptic number.

It is an amenable number.

220221211021021 is a deficient number, since it is larger than the sum of its proper divisors (32561644397219).

220221211021021 is a wasteful number, since it uses less digits than its factorization.

220221211021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120882324.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220221211021021 its reverse (120120112122022), we get a palindrome (340341323143043).

The spelling of 220221211021021 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred eleven million, twenty-one thousand, twenty-one".