12122021112021 has 48 divisors (see below), whose sum is σ = 19554439320000. Its totient is φ = 7191218548224.

The previous prime is 12122021112001. The next prime is 12122021112043. The reversal of 12122021112021 is 12021112022121.

It is not a de Polignac number, because 12122021112021 - 2⁵ = 12122021111989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122021111985 and 12122021112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122021112001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2727706 + ... + 5628891.

It is an arithmetic number, because the mean of its divisors is an integer number (407384152500).

Almost surely, 2^{12122021112021} is an apocalyptic number.

It is an amenable number.

12122021112021 is a deficient number, since it is larger than the sum of its proper divisors (7432418207979).

12122021112021 is a wasteful number, since it uses less digits than its factorization.

12122021112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357138 (or 8357135 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12122021112021 its reverse (12021112022121), we get a palindrome (24143133134142).

The spelling of 12122021112021 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, one hundred twelve thousand, twenty-one".