2221122012201 has 6 divisors (see below), whose sum is σ = 3208287350970. Its totient is φ = 1480748008128.

The previous prime is 2221122012181. The next prime is 2221122012257. The reversal of 2221122012201 is 1022102211222.

It is a happy number.

2221122012201 is a `hidden beast` number, since 2 + 221 + 1 + 220 + 1 + 220 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2221113315600 + 8696601 = 1490340^2 + 2949^2 .

It is not a de Polignac number, because 2221122012201 - 2²³ = 2221113623593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221122012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123395667336 + ... + 123395667353.

It is an arithmetic number, because the mean of its divisors is an integer number (534714558495).

Almost surely, 2^{2221122012201} is an apocalyptic number.

It is an amenable number.

2221122012201 is a deficient number, since it is larger than the sum of its proper divisors (987165338769).

2221122012201 is a wasteful number, since it uses less digits than its factorization.

2221122012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246791334695 (or 246791334692 counting only the distinct ones).

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

Adding to 2221122012201 its reverse (1022102211222), we get a palindrome (3243224223423).

The spelling of 2221122012201 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, twelve thousand, two hundred one".