20012210112001 has 4 divisors (see below), whose sum is σ = 20013361778692. Its totient is φ = 20011058445312.

The previous prime is 20012210111983. The next prime is 20012210112047. The reversal of 20012210112001 is 10021101221002.

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 4910833281600 + 15101376830401 = 2216040^2 + 3886049^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012210112001 - 2¹⁷ = 20012209980929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012210182001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575807280 + ... + 575842033.

It is an arithmetic number, because the mean of its divisors is an integer number (5003340444673).

Almost surely, 2^{20012210112001} is an apocalyptic number.

It is an amenable number.

20012210112001 is a deficient number, since it is larger than the sum of its proper divisors (1151666691).

20012210112001 is a wasteful number, since it uses less digits than its factorization.

20012210112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151666690.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20012210112001 its reverse (10021101221002), we get a palindrome (30033311333003).

The spelling of 20012210112001 in words is "twenty trillion, twelve billion, two hundred ten million, one hundred twelve thousand, one".