20200100122021 has 4 divisors (see below), whose sum is σ = 20455797592000. Its totient is φ = 19944402652044.

The previous prime is 20200100121991. The next prime is 20200100122087. The reversal of 20200100122021 is 12022100100202.

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 20200100122021 - 2¹⁷ = 20200099990949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200100121992 and 20200100122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200100122421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127848734871 + ... + 127848735028.

It is an arithmetic number, because the mean of its divisors is an integer number (5113949398000).

Almost surely, 2^{20200100122021} is an apocalyptic number.

It is an amenable number.

20200100122021 is a deficient number, since it is larger than the sum of its proper divisors (255697469979).

20200100122021 is an equidigital number, since it uses as much as digits as its factorization.

20200100122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255697469978.

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

Adding to 20200100122021 its reverse (12022100100202), we get a palindrome (32222200222223).

The spelling of 20200100122021 in words is "twenty trillion, two hundred billion, one hundred million, one hundred twenty-two thousand, twenty-one".