2120021122201 has 8 divisors (see below), whose sum is σ = 2120533838280. Its totient is φ = 2119508485632.

The previous prime is 2120021122169. The next prime is 2120021122211. The reversal of 2120021122201 is 1022211200212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 363972096601 + 1756049025600 = 603301^2 + 1325160^2 .

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 2120021122201 - 2⁵ = 2120021122169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120021122211) 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, 134400351 + ... + 134416123.

It is an arithmetic number, because the mean of its divisors is an integer number (265066729785).

Almost surely, 2^{2120021122201} is an apocalyptic number.

It is an amenable number.

2120021122201 is a deficient number, since it is larger than the sum of its proper divisors (512716079).

2120021122201 is a wasteful number, since it uses less digits than its factorization.

2120021122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39755.

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

Adding to 2120021122201 its reverse (1022211200212), we get a palindrome (3142232322413).

The spelling of 2120021122201 in words is "two trillion, one hundred twenty billion, twenty-one million, one hundred twenty-two thousand, two hundred one".