20120122210201 has 8 divisors (see below), whose sum is σ = 21667970386440. Its totient is φ = 18572294957952.

The previous prime is 20120122210087. The next prime is 20120122210219. The reversal of 20120122210201 is 10201222102102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1076979026176 + 19043143184025 = 1037776^2 + 4363845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120122210201 - 2⁷ = 20120122210073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120122210271) 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 7 ways as a sum of consecutive naturals, for example, 3204790 + ... + 7107103.

It is an arithmetic number, because the mean of its divisors is an integer number (2708496298305).

Almost surely, 2^{20120122210201} is an apocalyptic number.

It is an amenable number.

20120122210201 is a deficient number, since it is larger than the sum of its proper divisors (1547848176239).

20120122210201 is a wasteful number, since it uses less digits than its factorization.

20120122210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10461995.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20120122210201 its reverse (10201222102102), we get a palindrome (30321344312303).

The spelling of 20120122210201 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, two hundred ten thousand, two hundred one".