202221213020321 has 8 divisors (see below), whose sum is σ = 222557215940064. Its totient is φ = 182210586147520.

The previous prime is 202221213020303. The next prime is 202221213020329. The reversal of 202221213020321 is 123020312122202.

It is a happy number.

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 202221213020321 - 2¹⁸ = 202221212758177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202221213020329) 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, 81344010431 + ... + 81344012916.

It is an arithmetic number, because the mean of its divisors is an integer number (27819651992508).

Almost surely, 2^{202221213020321} is an apocalyptic number.

It is an amenable number.

202221213020321 is a deficient number, since it is larger than the sum of its proper divisors (20336002919743).

202221213020321 is a wasteful number, since it uses less digits than its factorization.

202221213020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162688023471.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 202221213020321 its reverse (123020312122202), we get a palindrome (325241525142523).

The spelling of 202221213020321 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred thirteen million, twenty thousand, three hundred twenty-one".