2201121111 has 48 divisors (see below), whose sum is σ = 3503305728. Its totient is φ = 1225224000.

The previous prime is 2201121103. The next prime is 2201121113. The reversal of 2201121111 is 1111211022.

It is not a de Polignac number, because 2201121111 - 2³ = 2201121103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201121113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1175506 + ... + 1177376.

It is an arithmetic number, because the mean of its divisors is an integer number (72985536).

Almost surely, 2^2201121111 is an apocalyptic number.

2201121111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2201121111 is a deficient number, since it is larger than the sum of its proper divisors (1302184617).

2201121111 is a wasteful number, since it uses less digits than its factorization.

2201121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2085 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2201121111 is about 46916.1071594820. The cubic root of 2201121111 is about 1300.8123346947.

Adding to 2201121111 its reverse (1111211022), we get a palindrome (3312332133).

The spelling of 2201121111 in words is "two billion, two hundred one million, one hundred twenty-one thousand, one hundred eleven".