2221201220001 has 32 divisors (see below), whose sum is σ = 3103245250560. Its totient is φ = 1410517680000.

The previous prime is 2221201219999. The next prime is 2221201220003. The reversal of 2221201220001 is 1000221021222.

It is an interprime number because it is at equal distance from previous prime (2221201219999) and next prime (2221201220003).

It is not a de Polignac number, because 2221201220001 - 2¹ = 2221201219999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221201220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151724440 + ... + 151739078.

It is an arithmetic number, because the mean of its divisors is an integer number (96976414080).

Almost surely, 2^{2221201220001} is an apocalyptic number.

It is an amenable number.

2221201220001 is a deficient number, since it is larger than the sum of its proper divisors (882044030559).

2221201220001 is a wasteful number, since it uses less digits than its factorization.

2221201220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23677.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2221201220001 its reverse (1000221021222), we get a palindrome (3221422241223).

The spelling of 2221201220001 in words is "two trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty thousand, one".