12021010202021 has 8 divisors (see below), whose sum is σ = 12316575274584. Its totient is φ = 11725557972480.

The previous prime is 12021010201999. The next prime is 12021010202027. The reversal of 12021010202021 is 12020201012021.

It can be written as a sum of positive squares in 4 ways, for example, as 570197152996 + 11450813049025 = 755114^2 + 3383905^2 .

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 12021010202021 - 2¹⁸ = 12021009939877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021010201987 and 12021010202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021010202027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27995060 + ... + 28421213.

It is an arithmetic number, because the mean of its divisors is an integer number (1539571909323).

Almost surely, 2^{12021010202021} is an apocalyptic number.

It is an amenable number.

12021010202021 is a deficient number, since it is larger than the sum of its proper divisors (295565072563).

12021010202021 is an equidigital number, since it uses as much as digits as its factorization.

12021010202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56421511.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021010202021 its reverse (12020201012021), we get a palindrome (24041211214042).

The spelling of 12021010202021 in words is "twelve trillion, twenty-one billion, ten million, two hundred two thousand, twenty-one".