202200221221 has 8 divisors (see below), whose sum is σ = 203416047000. Its totient is φ = 200987915520.

The previous prime is 202200221177. The next prime is 202200221227. The reversal of 202200221221 is 122122002202.

It can be written as a sum of positive squares in 4 ways, for example, as 82216960225 + 119983260996 = 286735^2 + 346386^2 .

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 202200221221 - 2¹³ = 202200213029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202200221195 and 202200221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202200221227) 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, 764746 + ... + 994603.

It is an arithmetic number, because the mean of its divisors is an integer number (25427005875).

Almost surely, 2^202200221221 is an apocalyptic number.

It is an amenable number.

202200221221 is a deficient number, since it is larger than the sum of its proper divisors (1215825779).

202200221221 is a wasteful number, since it uses less digits than its factorization.

202200221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760039.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202200221221 its reverse (122122002202), we get a palindrome (324322223423).

The spelling of 202200221221 in words is "two hundred two billion, two hundred million, two hundred twenty-one thousand, two hundred twenty-one".