2221202001 has 4 divisors (see below), whose sum is σ = 2961602672. Its totient is φ = 1480801332.

The previous prime is 2221201951. The next prime is 2221202029. The reversal of 2221202001 is 1002021222.

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 2221202001 - 2¹⁹ = 2220677713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221202051) 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 3 ways as a sum of consecutive naturals, for example, 370200331 + ... + 370200336.

It is an arithmetic number, because the mean of its divisors is an integer number (740400668).

Almost surely, 2^2221202001 is an apocalyptic number.

It is an amenable number.

2221202001 is a deficient number, since it is larger than the sum of its proper divisors (740400671).

2221202001 is an equidigital number, since it uses as much as digits as its factorization.

2221202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740400670.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2221202001 is about 47129.6297566616. The cubic root of 2221202001 is about 1304.7561482684.

Adding to 2221202001 its reverse (1002021222), we get a palindrome (3223223223).

The spelling of 2221202001 in words is "two billion, two hundred twenty-one million, two hundred two thousand, one".