20021001121103 has 2 divisors, whose sum is σ = 20021001121104. Its totient is φ = 20021001121102.

The previous prime is 20021001121063. The next prime is 20021001121169. The reversal of 20021001121103 is 30112110012002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20021001121103 - 2⁶ = 20021001121039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021001121403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010500560551 + 10010500560552.

It is an arithmetic number, because the mean of its divisors is an integer number (10010500560552).

Almost surely, 2^{20021001121103} is an apocalyptic number.

20021001121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021001121103 is an equidigital number, since it uses as much as digits as its factorization.

20021001121103 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 14.

Adding to 20021001121103 its reverse (30112110012002), we get a palindrome (50133111133105).

The spelling of 20021001121103 in words is "twenty trillion, twenty-one billion, one million, one hundred twenty-one thousand, one hundred three".