20102001012021 has 32 divisors (see below), whose sum is σ = 27285362311680. Its totient is φ = 13161559449600.

The previous prime is 20102001012011. The next prime is 20102001012031. The reversal of 20102001012021 is 12021010020102.

It is an interprime number because it is at equal distance from previous prime (20102001012011) and next prime (20102001012031).

It is not a de Polignac number, because 20102001012021 - 2¹⁰ = 20102001010997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102001011988 and 20102001012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102001012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1009177300 + ... + 1009197218.

It is an arithmetic number, because the mean of its divisors is an integer number (852667572240).

Almost surely, 2^{20102001012021} is an apocalyptic number.

It is an amenable number.

20102001012021 is a deficient number, since it is larger than the sum of its proper divisors (7183361299659).

20102001012021 is a wasteful number, since it uses less digits than its factorization.

20102001012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39357.

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

Adding to 20102001012021 its reverse (12021010020102), we get a palindrome (32123011032123).

The spelling of 20102001012021 in words is "twenty trillion, one hundred two billion, one million, twelve thousand, twenty-one".