2021021303029 has 4 divisors (see below), whose sum is σ = 2021416579276. Its totient is φ = 2020626026784.

The previous prime is 2021021302961. The next prime is 2021021303053. The reversal of 2021021303029 is 9203031201202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150623162404 + 1870398140625 = 388102^2 + 1367625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021021303029 - 2¹⁹ = 2021020778741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021021302994 and 2021021303012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021333029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197630454 + ... + 197640679.

It is an arithmetic number, because the mean of its divisors is an integer number (505354144819).

Almost surely, 2^{2021021303029} is an apocalyptic number.

It is an amenable number.

2021021303029 is a deficient number, since it is larger than the sum of its proper divisors (395276247).

2021021303029 is an equidigital number, since it uses as much as digits as its factorization.

2021021303029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395276246.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 2021021303029 in words is "two trillion, twenty-one billion, twenty-one million, three hundred three thousand, twenty-nine".