2012000122021 has 2 divisors, whose sum is σ = 2012000122022. Its totient is φ = 2012000122020.

The previous prime is 2012000122019. The next prime is 2012000122031. The reversal of 2012000122021 is 1202210002102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1897820332996 + 114179789025 = 1377614^2 + 337905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012000122021 - 2¹ = 2012000122019 is a prime.

Together with 2012000122019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2012000121992 and 2012000122010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012000122031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006000061010 + 1006000061011.

It is an arithmetic number, because the mean of its divisors is an integer number (1006000061011).

Almost surely, 2^{2012000122021} is an apocalyptic number.

It is an amenable number.

2012000122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012000122021 is an equidigital number, since it uses as much as digits as its factorization.

2012000122021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2012000122021 its reverse (1202210002102), we get a palindrome (3214210124123).

The spelling of 2012000122021 in words is "two trillion, twelve billion, one hundred twenty-two thousand, twenty-one".