20011112200001 has 48 divisors (see below), whose sum is σ = 23246309283840. Its totient is φ = 17164507875840.

The previous prime is 20011112199973. The next prime is 20011112200081. The reversal of 20011112200001 is 10000221111002.

It is not a de Polignac number, because 20011112200001 - 2¹⁸ = 20011111937857 is a prime.

It is a super-2 number, since 2×20011112200001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20011112200081) 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, 675101141 + ... + 675130781.

It is an arithmetic number, because the mean of its divisors is an integer number (484298110080).

Almost surely, 2^{20011112200001} is an apocalyptic number.

It is an amenable number.

20011112200001 is a deficient number, since it is larger than the sum of its proper divisors (3235197083839).

20011112200001 is a wasteful number, since it uses less digits than its factorization.

20011112200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33706 (or 33693 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20011112200001 its reverse (10000221111002), we get a palindrome (30011333311003).

The spelling of 20011112200001 in words is "twenty trillion, eleven billion, one hundred twelve million, two hundred thousand, one".