20012211122001 has 16 divisors (see below), whose sum is σ = 32099787264000. Its totient is φ = 10833678201168.

The previous prime is 20012211121913. The next prime is 20012211122021. The reversal of 20012211122001 is 10022111221002.

It is not a de Polignac number, because 20012211122001 - 2¹⁰ = 20012211120977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012211122021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25077958401 + ... + 25077959198.

It is an arithmetic number, because the mean of its divisors is an integer number (2006236704000).

Almost surely, 2^{20012211122001} is an apocalyptic number.

20012211122001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20012211122001 is a deficient number, since it is larger than the sum of its proper divisors (12087576141999).

20012211122001 is a wasteful number, since it uses less digits than its factorization.

20012211122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50155917628.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012211122001 its reverse (10022111221002), we get a palindrome (30034322343003).

Subtracting from 20012211122001 its reverse (10022111221002), we obtain a palindrome (9990099900999).

The spelling of 20012211122001 in words is "twenty trillion, twelve billion, two hundred eleven million, one hundred twenty-two thousand, one".