20002021101031 has 2 divisors, whose sum is σ = 20002021101032. Its totient is φ = 20002021101030.

The previous prime is 20002021100923. The next prime is 20002021101233. The reversal of 20002021101031 is 13010112020002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002021101031 - 2¹⁹ = 20002020576743 is a prime.

It is a super-2 number, since 2×20002021101031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002021102031) 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, 10001010550515 + 10001010550516.

It is an arithmetic number, because the mean of its divisors is an integer number (10001010550516).

Almost surely, 2^{20002021101031} is an apocalyptic number.

20002021101031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002021101031 is an equidigital number, since it uses as much as digits as its factorization.

20002021101031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20002021101031 its reverse (13010112020002), we get a palindrome (33012133121033).

The spelling of 20002021101031 in words is "twenty trillion, two billion, twenty-one million, one hundred one thousand, thirty-one".