2221120122201 has 24 divisors (see below), whose sum is σ = 3314041316040. Its totient is φ = 1432398629376.

The previous prime is 2221120122191. The next prime is 2221120122203. The reversal of 2221120122201 is 1022210211222.

It is a happy number.

2221120122201 is a `hidden beast` number, since 2 + 221 + 120 + 122 + 201 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1336625015625 + 884495106576 = 1156125^2 + 940476^2 .

It is not a de Polignac number, because 2221120122201 - 2¹⁴ = 2221120105817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221120122203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19219936 + ... + 19335153.

It is an arithmetic number, because the mean of its divisors is an integer number (138085054835).

Almost surely, 2^{2221120122201} is an apocalyptic number.

It is an amenable number.

2221120122201 is a deficient number, since it is larger than the sum of its proper divisors (1092921193839).

2221120122201 is a wasteful number, since it uses less digits than its factorization.

2221120122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38555305 (or 38555302 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2221120122201 its reverse (1022210211222), we get a palindrome (3243330333423).

The spelling of 2221120122201 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, two hundred one".