2021231201029 has 2 divisors, whose sum is σ = 2021231201030. Its totient is φ = 2021231201028.

The previous prime is 2021231200999. The next prime is 2021231201047. The reversal of 2021231201029 is 9201021321202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1831753816929 + 189477384100 = 1353423^2 + 435290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021231201029 - 2⁹ = 2021231200517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021231200994 and 2021231201012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021231201329) 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 as a sum of consecutive naturals, namely, 1010615600514 + 1010615600515.

It is an arithmetic number, because the mean of its divisors is an integer number (1010615600515).

Almost surely, 2^{2021231201029} is an apocalyptic number.

It is an amenable number.

2021231201029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021231201029 is an equidigital number, since it uses as much as digits as its factorization.

2021231201029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 2021231201029 in words is "two trillion, twenty-one billion, two hundred thirty-one million, two hundred one thousand, twenty-nine".