12022221222121 has 8 divisors (see below), whose sum is σ = 13685374355904. Its totient is φ = 10454105410320.

The previous prime is 12022221222119. The next prime is 12022221222139. The reversal of 12022221222121 is 12122212222021.

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

It is not a de Polignac number, because 12022221222121 - 2¹ = 12022221222119 is a prime.

It is a super-2 number, since 2×12022221222121² (a number of 27 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 = 12022221222092 and 12022221222101.

It is not an unprimeable number, because it can be changed into a prime (12022221222161) 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, 23759330226 + ... + 23759330731.

It is an arithmetic number, because the mean of its divisors is an integer number (1710671794488).

Almost surely, 2^{12022221222121} is an apocalyptic number.

12022221222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12022221222121 is a deficient number, since it is larger than the sum of its proper divisors (1663153133783).

12022221222121 is a wasteful number, since it uses less digits than its factorization.

12022221222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47518660991.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12022221222121 its reverse (12122212222021), we get a palindrome (24144433444142).

The spelling of 12022221222121 in words is "twelve trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".