20210120011019 has 2 divisors, whose sum is σ = 20210120011020. Its totient is φ = 20210120011018.

The previous prime is 20210120010961. The next prime is 20210120011061. The reversal of 20210120011019 is 91011002101202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20210120011019 - 2⁴⁴ = 2617933966603 is a prime.

It is a super-2 number, since 2×20210120011019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20210120011519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105060005509 + 10105060005510.

It is an arithmetic number, because the mean of its divisors is an integer number (10105060005510).

Almost surely, 2^{20210120011019} is an apocalyptic number.

20210120011019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210120011019 is an equidigital number, since it uses as much as digits as its factorization.

20210120011019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 20210120011019 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, eleven thousand, nineteen".