2220220222001 has 4 divisors (see below), whose sum is σ = 2220262476900. Its totient is φ = 2220177967104.

The previous prime is 2220220221887. The next prime is 2220220222009. The reversal of 2220220222001 is 1002220220222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1634920249600 + 585299972401 = 1278640^2 + 765049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220220222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220220222009) 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 3 ways as a sum of consecutive naturals, for example, 21048536 + ... + 21153753.

It is an arithmetic number, because the mean of its divisors is an integer number (555065619225).

Almost surely, 2^{2220220222001} is an apocalyptic number.

It is an amenable number.

2220220222001 is a deficient number, since it is larger than the sum of its proper divisors (42254899).

2220220222001 is an equidigital number, since it uses as much as digits as its factorization.

2220220222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42254898.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 2220220222001 its reverse (1002220220222), we get a palindrome (3222440442223).

The spelling of 2220220222001 in words is "two trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-two thousand, one".