322120121021221 has 4 divisors (see below), whose sum is σ = 341068363434252. Its totient is φ = 303171878608192.

The previous prime is 322120121021219. The next prime is 322120121021269. The reversal of 322120121021221 is 122120121021223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 216622879716996 + 105497241304225 = 14718114^2 + 10271185^2 .

It is a cyclic number.

It is not a de Polignac number, because 322120121021221 - 2¹ = 322120121021219 is a prime.

It is a super-2 number, since 2×322120121021221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322120121021192 and 322120121021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322120121021821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9474121206490 + ... + 9474121206523.

It is an arithmetic number, because the mean of its divisors is an integer number (85267090858563).

Almost surely, 2^{322120121021221} is an apocalyptic number.

It is an amenable number.

322120121021221 is a deficient number, since it is larger than the sum of its proper divisors (18948242413031).

322120121021221 is a wasteful number, since it uses less digits than its factorization.

322120121021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18948242413030.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 322120121021221 its reverse (122120121021223), we get a palindrome (444240242042444).

It can be divided in two parts, 32212012 and 1021221, that added together give a palindrome (33233233).

The spelling of 322120121021221 in words is "three hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-one".