20021144040113 has 2 divisors, whose sum is σ = 20021144040114. Its totient is φ = 20021144040112.

The previous prime is 20021144040077. The next prime is 20021144040133. The reversal of 20021144040113 is 31104044112002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19758665085184 + 262478954929 = 4445072^2 + 512327^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021144040113 - 2²⁶ = 20021076931249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021144040133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010572020056 + 10010572020057.

It is an arithmetic number, because the mean of its divisors is an integer number (10010572020057).

Almost surely, 2^{20021144040113} is an apocalyptic number.

It is an amenable number.

20021144040113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021144040113 is an equidigital number, since it uses as much as digits as its factorization.

20021144040113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20021144040113 its reverse (31104044112002), we get a palindrome (51125188152115).

The spelling of 20021144040113 in words is "twenty trillion, twenty-one billion, one hundred forty-four million, forty thousand, one hundred thirteen".