2010100031021 has 4 divisors (see below), whose sum is σ = 2010698100444. Its totient is φ = 2009501961600.

The previous prime is 2010100031011. The next prime is 2010100031047. The reversal of 2010100031021 is 1201300010102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1668711069796 + 341388961225 = 1291786^2 + 584285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010100031021 - 2¹⁸ = 2010099768877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010100030993 and 2010100031011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010100031011) 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 3 ways as a sum of consecutive naturals, for example, 299029670 + ... + 299036391.

It is an arithmetic number, because the mean of its divisors is an integer number (502674525111).

Almost surely, 2^{2010100031021} is an apocalyptic number.

It is an amenable number.

2010100031021 is a deficient number, since it is larger than the sum of its proper divisors (598069423).

2010100031021 is an equidigital number, since it uses as much as digits as its factorization.

2010100031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598069422.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 2010100031021 its reverse (1201300010102), we get a palindrome (3211400041123).

The spelling of 2010100031021 in words is "two trillion, ten billion, one hundred million, thirty-one thousand, twenty-one".