2021112022121 has 8 divisors (see below), whose sum is σ = 2040187914720. Its totient is φ = 2002039592608.

The previous prime is 2021112022099. The next prime is 2021112022123. The reversal of 2021112022121 is 1212202111202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021112022121 - 2²⁶ = 2021044913257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021112022121.

It is not an unprimeable number, because it can be changed into a prime (2021112022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314525 + ... + 2034981.

It is an arithmetic number, because the mean of its divisors is an integer number (255023489340).

Almost surely, 2^{2021112022121} is an apocalyptic number.

It is an amenable number.

2021112022121 is a deficient number, since it is larger than the sum of its proper divisors (19075892599).

2021112022121 is a wasteful number, since it uses less digits than its factorization.

2021112022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731543.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021112022121 its reverse (1212202111202), we get a palindrome (3233314133323).

The spelling of 2021112022121 in words is "two trillion, twenty-one billion, one hundred twelve million, twenty-two thousand, one hundred twenty-one".