20212010010021 has 4 divisors (see below), whose sum is σ = 26949346680032. Its totient is φ = 13474673340012.

The previous prime is 20212010009987. The next prime is 20212010010029. The reversal of 20212010010021 is 12001001021202.

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 not a de Polignac number, because 20212010010021 - 2⁹ = 20212010009509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212010009979 and 20212010010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212010010029) 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 in 3 ways as a sum of consecutive naturals, for example, 3368668335001 + ... + 3368668335006.

It is an arithmetic number, because the mean of its divisors is an integer number (6737336670008).

Almost surely, 2^{20212010010021} is an apocalyptic number.

It is an amenable number.

20212010010021 is a deficient number, since it is larger than the sum of its proper divisors (6737336670011).

20212010010021 is an equidigital number, since it uses as much as digits as its factorization.

20212010010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737336670010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20212010010021 its reverse (12001001021202), we get a palindrome (32213011031223).

The spelling of 20212010010021 in words is "twenty trillion, two hundred twelve billion, ten million, ten thousand, twenty-one".