2221220020221 has 24 divisors (see below), whose sum is σ = 3212308230560. Its totient is φ = 1479023906400.

The previous prime is 2221220020219. The next prime is 2221220020241. The reversal of 2221220020221 is 1220200221222.

2221220020221 is a `hidden beast` number, since 2 + 221 + 2 + 200 + 20 + 221 = 666.

It is not a de Polignac number, because 2221220020221 - 2¹ = 2221220020219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221220020194 and 2221220020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221220020241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27508335 + ... + 27588963.

Almost surely, 2^{2221220020221} is an apocalyptic number.

It is an amenable number.

2221220020221 is a deficient number, since it is larger than the sum of its proper divisors (991088210339).

2221220020221 is a wasteful number, since it uses less digits than its factorization.

2221220020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84297 (or 84294 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2221220020221 its reverse (1220200221222), we get a palindrome (3441420241443).

The spelling of 2221220020221 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, twenty thousand, two hundred twenty-one".