2121120322201 has 4 divisors (see below), whose sum is σ = 2144953134900. Its totient is φ = 2097287509504.

The previous prime is 2121120322051. The next prime is 2121120322207. The reversal of 2121120322201 is 1022230211212.

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 185460283801 + 1935660038400 = 430651^2 + 1391280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121120322201 - 2¹⁷ = 2121120191129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121120322207) 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, 11916406216 + ... + 11916406393.

It is an arithmetic number, because the mean of its divisors is an integer number (536238283725).

Almost surely, 2^{2121120322201} is an apocalyptic number.

It is an amenable number.

2121120322201 is a deficient number, since it is larger than the sum of its proper divisors (23832812699).

2121120322201 is an equidigital number, since it uses as much as digits as its factorization.

2121120322201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23832812698.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2121120322201 its reverse (1022230211212), we get a palindrome (3143350533413).

The spelling of 2121120322201 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, three hundred twenty-two thousand, two hundred one".