20312044302021 has 16 divisors (see below), whose sum is σ = 28676037317184. Its totient is φ = 12744718747904.

The previous prime is 20312044301999. The next prime is 20312044302031. The reversal of 20312044302021 is 12020344021302.

It is a happy number.

It is not a de Polignac number, because 20312044302021 - 2¹⁸ = 20312044039877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20312044301982 and 20312044302000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312044302031) 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 15 ways as a sum of consecutive naturals, for example, 5935210 + ... + 8709236.

It is an arithmetic number, because the mean of its divisors is an integer number (1792252332324).

Almost surely, 2^{20312044302021} is an apocalyptic number.

It is an amenable number.

20312044302021 is a deficient number, since it is larger than the sum of its proper divisors (8363993015163).

20312044302021 is a wasteful number, since it uses less digits than its factorization.

20312044302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917620.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20312044302021 its reverse (12020344021302), we get a palindrome (32332388323323).

The spelling of 20312044302021 in words is "twenty trillion, three hundred twelve billion, forty-four million, three hundred two thousand, twenty-one".