2201021121 has 8 divisors (see below), whose sum is σ = 3160440640. Its totient is φ = 1354474512.

The previous prime is 2201021107. The next prime is 2201021129. The reversal of 2201021121 is 1211201022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2201021121 - 2⁹ = 2201020609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201021097 and 2201021106.

It is not an unprimeable number, because it can be changed into a prime (2201021129) 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 7 ways as a sum of consecutive naturals, for example, 28218181 + ... + 28218258.

It is an arithmetic number, because the mean of its divisors is an integer number (395055080).

Almost surely, 2^2201021121 is an apocalyptic number.

It is an amenable number.

2201021121 is a deficient number, since it is larger than the sum of its proper divisors (959419519).

2201021121 is a wasteful number, since it uses less digits than its factorization.

2201021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56436455.

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

The square root of 2201021121 is about 46915.0415218829. The cubic root of 2201021121 is about 1300.7926371272.

Adding to 2201021121 its reverse (1211201022), we get a palindrome (3412222143).

The spelling of 2201021121 in words is "two billion, two hundred one million, twenty-one thousand, one hundred twenty-one".