2012221001 has 8 divisors (see below), whose sum is σ = 2355771264. Its totient is φ = 1682693280.

The previous prime is 2012220989. The next prime is 2012221007. The reversal of 2012221001 is 1001222102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2012221001 - 2²² = 2008026697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012221007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505325 + ... + 3505898.

It is an arithmetic number, because the mean of its divisors is an integer number (294471408).

Almost surely, 2^2012221001 is an apocalyptic number.

It is an amenable number.

2012221001 is a deficient number, since it is larger than the sum of its proper divisors (343550263).

2012221001 is an equidigital number, since it uses as much as digits as its factorization.

2012221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011271.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2012221001 is about 44857.7864032545. The cubic root of 2012221001 is about 1262.4820899462.

Adding to 2012221001 its reverse (1001222102), we get a palindrome (3013443103).

The spelling of 2012221001 in words is "two billion, twelve million, two hundred twenty-one thousand, one".