202022021212221 has 8 divisors (see below), whose sum is σ = 307843079942464. Its totient is φ = 115441154978400.

The previous prime is 202022021212159. The next prime is 202022021212237. The reversal of 202022021212221 is 122212120220202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202022021212221 - 2¹¹ = 202022021210173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9620096248201 = 202022021212221 / (2 + 0 + 2 + 0 + 2 + 2 + 0 + 2 + 1 + 2 + 1 + 2 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202022021212321) 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, 4810048124080 + ... + 4810048124121.

It is an arithmetic number, because the mean of its divisors is an integer number (38480384992808).

Almost surely, 2^{202022021212221} is an apocalyptic number.

202022021212221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202022021212221 is a deficient number, since it is larger than the sum of its proper divisors (105821058730243).

202022021212221 is an equidigital number, since it uses as much as digits as its factorization.

202022021212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9620096248211.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202022021212221 its reverse (122212120220202), we get a palindrome (324234141432423).

The spelling of 202022021212221 in words is "two hundred two trillion, twenty-two billion, twenty-one million, two hundred twelve thousand, two hundred twenty-one".