121021221200323 has 16 divisors (see below), whose sum is σ = 127248656832000. Its totient is φ = 114874278787840.

The previous prime is 121021221200287. The next prime is 121021221200371. The reversal of 121021221200323 is 323002122120121.

It is a cyclic number.

It is not a de Polignac number, because 121021221200323 - 2¹⁷ = 121021221069251 is a prime.

It is a super-2 number, since 2×121021221200323² (a number of 29 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 = 121021221200294 and 121021221200303.

It is not an unprimeable number, because it can be changed into a prime (121021221200923) 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 15 ways as a sum of consecutive naturals, for example, 283156098 + ... + 283583176.

It is an arithmetic number, because the mean of its divisors is an integer number (7953041052000).

Almost surely, 2^{121021221200323} is an apocalyptic number.

121021221200323 is a deficient number, since it is larger than the sum of its proper divisors (6227435631677).

121021221200323 is a wasteful number, since it uses less digits than its factorization.

121021221200323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521282.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121021221200323 its reverse (323002122120121), we get a palindrome (444023343320444).

The spelling of 121021221200323 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty-one million, two hundred thousand, three hundred twenty-three".