12122222002121 has 64 divisors (see below), whose sum is σ = 15940299350016. Its totient is φ = 8938083264000.

The previous prime is 12122222002073. The next prime is 12122222002129. The reversal of 12122222002121 is 12120022222121.

It is not a de Polignac number, because 12122222002121 - 2²⁶ = 12122154893257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122222002093 and 12122222002102.

It is not an unprimeable number, because it can be changed into a prime (12122222002129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 213364700 + ... + 213421506.

It is an arithmetic number, because the mean of its divisors is an integer number (249067177344).

Almost surely, 2^{12122222002121} is an apocalyptic number.

12122222002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122222002121 is a deficient number, since it is larger than the sum of its proper divisors (3818077347895).

12122222002121 is a wasteful number, since it uses less digits than its factorization.

12122222002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58142.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12122222002121 its reverse (12120022222121), we get a palindrome (24242244224242).

The spelling of 12122222002121 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two thousand, one hundred twenty-one".