2112201022201 has 4 divisors (see below), whose sum is σ = 2236448141172. Its totient is φ = 1987953903232.

The previous prime is 2112201022159. The next prime is 2112201022241. The reversal of 2112201022201 is 1022201022112.

It is a happy number.

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 1489561666576 + 622639355625 = 1220476^2 + 789075^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2112201022201 is a prime.

It is a super-2 number, since 2×2112201022201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112201022241) 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, 62123559460 + ... + 62123559493.

It is an arithmetic number, because the mean of its divisors is an integer number (559112035293).

Almost surely, 2^{2112201022201} is an apocalyptic number.

It is an amenable number.

2112201022201 is a deficient number, since it is larger than the sum of its proper divisors (124247118971).

2112201022201 is a wasteful number, since it uses less digits than its factorization.

2112201022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124247118970.

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

Adding to 2112201022201 its reverse (1022201022112), we get a palindrome (3134402044313).

The spelling of 2112201022201 in words is "two trillion, one hundred twelve billion, two hundred one million, twenty-two thousand, two hundred one".