10201210021021 has 2 divisors, whose sum is σ = 10201210021022. Its totient is φ = 10201210021020.

The previous prime is 10201210020929. The next prime is 10201210021069. The reversal of 10201210021021 is 12012001210201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9991377315396 + 209832705625 = 3160914^2 + 458075^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201210021021 - 2¹⁹ = 10201209496733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10201210020992 and 10201210021010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10201210021081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100605010510 + 5100605010511.

It is an arithmetic number, because the mean of its divisors is an integer number (5100605010511).

Almost surely, 2^{10201210021021} is an apocalyptic number.

It is an amenable number.

10201210021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201210021021 is an equidigital number, since it uses as much as digits as its factorization.

10201210021021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10201210021021 its reverse (12012001210201), we get a palindrome (22213211231222).

The spelling of 10201210021021 in words is "ten trillion, two hundred one billion, two hundred ten million, twenty-one thousand, twenty-one".