20122220200001 has 4 divisors (see below), whose sum is σ = 20816089862100. Its totient is φ = 19428350537904.

The previous prime is 20122220199973. The next prime is 20122220200063. The reversal of 20122220200001 is 10000202222102.

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 5536114881025 + 14586105318976 = 2352895^2 + 3819176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122220200001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122220200091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346934831006 + ... + 346934831063.

It is an arithmetic number, because the mean of its divisors is an integer number (5204022465525).

Almost surely, 2^{20122220200001} is an apocalyptic number.

It is an amenable number.

20122220200001 is a deficient number, since it is larger than the sum of its proper divisors (693869662099).

20122220200001 is an equidigital number, since it uses as much as digits as its factorization.

20122220200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693869662098.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20122220200001 its reverse (10000202222102), we get a palindrome (30122422422103).

The spelling of 20122220200001 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty million, two hundred thousand, one".