20202100021201 has 4 divisors (see below), whose sum is σ = 23088114309952. Its totient is φ = 17316085732452.

The previous prime is 20202100021183. The next prime is 20202100021237. The reversal of 20202100021201 is 10212000120202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20202100021201 - 2²⁷ = 20201965803473 is a prime.

It is a super-4 number, since 4×20202100021201⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202100021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443007144365 + ... + 1443007144378.

It is an arithmetic number, because the mean of its divisors is an integer number (5772028577488).

Almost surely, 2^{20202100021201} is an apocalyptic number.

It is an amenable number.

20202100021201 is a deficient number, since it is larger than the sum of its proper divisors (2886014288751).

20202100021201 is an equidigital number, since it uses as much as digits as its factorization.

20202100021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886014288750.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20202100021201 its reverse (10212000120202), we get a palindrome (30414100141403).

Subtracting from 20202100021201 its reverse (10212000120202), we obtain a palindrome (9990099900999).

The spelling of 20202100021201 in words is "twenty trillion, two hundred two billion, one hundred million, twenty-one thousand, two hundred one".