202221011020221 has 32 divisors (see below), whose sum is σ = 307159846909440. Its totient is φ = 131411787264000.

The previous prime is 202221011020207. The next prime is 202221011020241. The reversal of 202221011020221 is 122020110122202.

It is a happy number.

202221011020221 is a `hidden beast` number, since 20 + 222 + 101 + 102 + 0 + 221 = 666.

It is not a de Polignac number, because 202221011020221 - 2⁴⁵ = 167036638931389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202221011020194 and 202221011020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221011020241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77940805 + ... + 80493546.

It is an arithmetic number, because the mean of its divisors is an integer number (9598745215920).

Almost surely, 2^{202221011020221} is an apocalyptic number.

It is an amenable number.

202221011020221 is a deficient number, since it is larger than the sum of its proper divisors (104938835889219).

202221011020221 is a wasteful number, since it uses less digits than its factorization.

202221011020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158435554 (or 158435548 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202221011020221 its reverse (122020110122202), we get a palindrome (324241121142423).

The spelling of 202221011020221 in words is "two hundred two trillion, two hundred twenty-one billion, eleven million, twenty thousand, two hundred twenty-one".