2221211001 has 8 divisors (see below), whose sum is σ = 3005818144. Its totient is φ = 1458705600.

The previous prime is 2221210997. The next prime is 2221211009. The reversal of 2221211001 is 1001121222.

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

It is not a de Polignac number, because 2221211001 - 2² = 2221210997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221211009) 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 7 ways as a sum of consecutive naturals, for example, 5525200 + ... + 5525601.

It is an arithmetic number, because the mean of its divisors is an integer number (375727268).

Almost surely, 2^2221211001 is an apocalyptic number.

It is an amenable number.

2221211001 is a deficient number, since it is larger than the sum of its proper divisors (784607143).

2221211001 is a wasteful number, since it uses less digits than its factorization.

2221211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050871.

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

The square root of 2221211001 is about 47129.7252379005. The cubic root of 2221211001 is about 1304.7579104958.

Adding to 2221211001 its reverse (1001121222), we get a palindrome (3222332223).

The spelling of 2221211001 in words is "two billion, two hundred twenty-one million, two hundred eleven thousand, one".