202120222221221 has 8 divisors (see below), whose sum is σ = 202155141397440. Its totient is φ = 202085303878368.

The previous prime is 202120222221161. The next prime is 202120222221241. The reversal of 202120222221221 is 122122222021202.

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 202120222221221 - 2¹⁴ = 202120222204837 is a prime.

It is a super-2 number, since 2×202120222221221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120222221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664697465 + ... + 665001473.

It is an arithmetic number, because the mean of its divisors is an integer number (25269392674680).

Almost surely, 2^{202120222221221} is an apocalyptic number.

It is an amenable number.

202120222221221 is a deficient number, since it is larger than the sum of its proper divisors (34919176219).

202120222221221 is a wasteful number, since it uses less digits than its factorization.

202120222221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416683.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 202120222221221 its reverse (122122222021202), we get a palindrome (324242444242423).

The spelling of 202120222221221 in words is "two hundred two trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".