20201012010919 has 2 divisors, whose sum is σ = 20201012010920. Its totient is φ = 20201012010918.

The previous prime is 20201012010913. The next prime is 20201012010931. The reversal of 20201012010919 is 91901021010202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201012010919 - 2²³ = 20201003622311 is a prime.

It is a super-2 number, since 2×20201012010919² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201012010913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100506005459 + 10100506005460.

It is an arithmetic number, because the mean of its divisors is an integer number (10100506005460).

Almost surely, 2^{20201012010919} is an apocalyptic number.

20201012010919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201012010919 is an equidigital number, since it uses as much as digits as its factorization.

20201012010919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 20201012010919 in words is "twenty trillion, two hundred one billion, twelve million, ten thousand, nine hundred nineteen".