20201010019999 has 4 divisors (see below), whose sum is σ = 20313864824760. Its totient is φ = 20088155215240.

The previous prime is 20201010019997. The next prime is 20201010020069. The reversal of 20201010019999 is 99991001010202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20201010019999 - 2¹ = 20201010019997 is a prime.

It is a super-3 number, since 3×20201010019999³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201010019997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56427402112 + ... + 56427402469.

It is an arithmetic number, because the mean of its divisors is an integer number (5078466206190).

Almost surely, 2^{20201010019999} is an apocalyptic number.

20201010019999 is a deficient number, since it is larger than the sum of its proper divisors (112854804761).

20201010019999 is a wasteful number, since it uses less digits than its factorization.

20201010019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112854804760.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 20201010019999 in words is "twenty trillion, two hundred one billion, ten million, nineteen thousand, nine hundred ninety-nine".