20212021102201 has 2 divisors, whose sum is σ = 20212021102202. Its totient is φ = 20212021102200.

The previous prime is 20212021102171. The next prime is 20212021102219. The reversal of 20212021102201 is 10220112021202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10451545423225 + 9760475678976 = 3232885^2 + 3124176^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212021102201 - 2³⁵ = 20177661363833 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212021102241) 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, 10106010551100 + 10106010551101.

It is an arithmetic number, because the mean of its divisors is an integer number (10106010551101).

Almost surely, 2^{20212021102201} is an apocalyptic number.

It is an amenable number.

20212021102201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212021102201 is an equidigital number, since it uses as much as digits as its factorization.

20212021102201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20212021102201 its reverse (10220112021202), we get a palindrome (30432133123403).

The spelling of 20212021102201 in words is "twenty trillion, two hundred twelve billion, twenty-one million, one hundred two thousand, two hundred one".