20201020120005 has 48 divisors (see below), whose sum is σ = 33132112956672. Its totient is φ = 10510173273600.

The previous prime is 20201020120003. The next prime is 20201020120037. The reversal of 20201020120005 is 50002102010202.

It is not a de Polignac number, because 20201020120005 - 2¹ = 20201020120003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201020120003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 357949140 + ... + 358005570.

It is an arithmetic number, because the mean of its divisors is an integer number (690252353264).

Almost surely, 2^{20201020120005} is an apocalyptic number.

It is an amenable number.

20201020120005 is a deficient number, since it is larger than the sum of its proper divisors (12931092836667).

20201020120005 is a wasteful number, since it uses less digits than its factorization.

20201020120005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70718 (or 70677 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 20201020120005 its reverse (50002102010202), we get a palindrome (70203122130207).

The spelling of 20201020120005 in words is "twenty trillion, two hundred one billion, twenty million, one hundred twenty thousand, five".