20112111002001 has 16 divisors (see below), whose sum is σ = 27083350080000. Its totient is φ = 13274489587200.

The previous prime is 20112111001993. The next prime is 20112111002017. The reversal of 20112111002001 is 10020011121102.

It is not a de Polignac number, because 20112111002001 - 2³ = 20112111001993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112111002701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2788000 + ... + 6927998.

It is an arithmetic number, because the mean of its divisors is an integer number (1692709380000).

Almost surely, 2^{20112111002001} is an apocalyptic number.

It is an amenable number.

20112111002001 is a deficient number, since it is larger than the sum of its proper divisors (6971239077999).

20112111002001 is a wasteful number, since it uses less digits than its factorization.

20112111002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156136.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20112111002001 its reverse (10020011121102), we get a palindrome (30132122123103).

The spelling of 20112111002001 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, two thousand, one".