2102201121 has 4 divisors (see below), whose sum is σ = 2802934832. Its totient is φ = 1401467412.

The previous prime is 2102201119. The next prime is 2102201131. The reversal of 2102201121 is 1211022012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2102201121 - 2¹ = 2102201119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102201097 and 2102201106.

It is not an unprimeable number, because it can be changed into a prime (2102201131) 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, 350366851 + ... + 350366856.

It is an arithmetic number, because the mean of its divisors is an integer number (700733708).

Almost surely, 2^2102201121 is an apocalyptic number.

It is an amenable number.

2102201121 is a deficient number, since it is larger than the sum of its proper divisors (700733711).

2102201121 is an equidigital number, since it uses as much as digits as its factorization.

2102201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700733710.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2102201121 is about 45849.7668587311. The cubic root of 2102201121 is about 1281.0264229958.

Adding to 2102201121 its reverse (1211022012), we get a palindrome (3313223133).

The spelling of 2102201121 in words is "two billion, one hundred two million, two hundred one thousand, one hundred twenty-one".