20122100110001 has 4 divisors (see below), whose sum is σ = 20122173765492. Its totient is φ = 20122026454512.

The previous prime is 20122100109989. The next prime is 20122100110069. The reversal of 20122100110001 is 10001100122102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6959360563600 + 13162739546401 = 2638060^2 + 3628049^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122100110001 - 2³⁴ = 20104920240817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122100110501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36416426 + ... + 36964851.

It is an arithmetic number, because the mean of its divisors is an integer number (5030543441373).

Almost surely, 2^{20122100110001} is an apocalyptic number.

It is an amenable number.

20122100110001 is a deficient number, since it is larger than the sum of its proper divisors (73655491).

20122100110001 is an equidigital number, since it uses as much as digits as its factorization.

20122100110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73655490.

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

Adding to 20122100110001 its reverse (10001100122102), we get a palindrome (30123200232103).

The spelling of 20122100110001 in words is "twenty trillion, one hundred twenty-two billion, one hundred million, one hundred ten thousand, one".