2012021022121 has 8 divisors (see below), whose sum is σ = 2210953427424. Its totient is φ = 1815758850720.

The previous prime is 2012021022097. The next prime is 2012021022127. The reversal of 2012021022121 is 1212201202102.

It is a happy number.

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 2012021022121 - 2⁷ = 2012021021993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012021022095 and 2012021022104.

It is not an unprimeable number, because it can be changed into a prime (2012021022127) 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, 667556895 + ... + 667559908.

It is an arithmetic number, because the mean of its divisors is an integer number (276369178428).

Almost surely, 2^{2012021022121} is an apocalyptic number.

It is an amenable number.

2012021022121 is a deficient number, since it is larger than the sum of its proper divisors (198932405303).

2012021022121 is a wasteful number, since it uses less digits than its factorization.

2012021022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335116951.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012021022121 its reverse (1212201202102), we get a palindrome (3224222224223).

The spelling of 2012021022121 in words is "two trillion, twelve billion, twenty-one million, twenty-two thousand, one hundred twenty-one".