2021021200127 has 2 divisors, whose sum is σ = 2021021200128. Its totient is φ = 2021021200126.

The previous prime is 2021021200117. The next prime is 2021021200147. The reversal of 2021021200127 is 7210021201202.

It is an a-pointer prime, because the next prime (2021021200147) can be obtained adding 2021021200127 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021021200127 - 2²⁰ = 2021020151551 is a prime.

It is a super-2 number, since 2×2021021200127² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021021200099 and 2021021200108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021021200117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010510600063 + 1010510600064.

It is an arithmetic number, because the mean of its divisors is an integer number (1010510600064).

Almost surely, 2^{2021021200127} is an apocalyptic number.

2021021200127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021021200127 is an equidigital number, since it uses as much as digits as its factorization.

2021021200127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 2021021200127 its reverse (7210021201202), we get a palindrome (9231042401329).

The spelling of 2021021200127 in words is "two trillion, twenty-one billion, twenty-one million, two hundred thousand, one hundred twenty-seven".