122021021212221 has 16 divisors (see below), whose sum is σ = 162802509719360. Its totient is φ = 81293453228160.

The previous prime is 122021021212213. The next prime is 122021021212267. The reversal of 122021021212221 is 122212120120221.

It is not a de Polignac number, because 122021021212221 - 2³ = 122021021212213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021021212291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35605026 + ... + 38881356.

It is an arithmetic number, because the mean of its divisors is an integer number (10175156857460).

Almost surely, 2^{122021021212221} is an apocalyptic number.

It is an amenable number.

122021021212221 is a deficient number, since it is larger than the sum of its proper divisors (40781488507139).

122021021212221 is a wasteful number, since it uses less digits than its factorization.

122021021212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284556.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122021021212221 its reverse (122212120120221), we get a palindrome (244233141332442).

The spelling of 122021021212221 in words is "one hundred twenty-two trillion, twenty-one billion, twenty-one million, two hundred twelve thousand, two hundred twenty-one".