20201001000111 has 24 divisors (see below), whose sum is σ = 29995421191424. Its totient is φ = 13091297163840.

The previous prime is 20201001000083. The next prime is 20201001000139. The reversal of 20201001000111 is 11100010010202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20201001000083) and next prime (20201001000139).

It is not a de Polignac number, because 20201001000111 - 2⁵ = 20201001000079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201001000093 and 20201001000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201001000161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27542200 + ... + 28266141.

Almost surely, 2^{20201001000111} is an apocalyptic number.

20201001000111 is a deficient number, since it is larger than the sum of its proper divisors (9794420191313).

20201001000111 is a wasteful number, since it uses less digits than its factorization.

20201001000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55809471 (or 55809468 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20201001000111 its reverse (11100010010202), we get a palindrome (31301011010313).

The spelling of 20201001000111 in words is "twenty trillion, two hundred one billion, one million, one hundred eleven", and thus it is an aban number.