2220120100001 has 2 divisors, whose sum is σ = 2220120100002. Its totient is φ = 2220120100000.

The previous prime is 2220120099997. The next prime is 2220120100021. The reversal of 2220120100001 is 1000010210222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1599152459776 + 620967640225 = 1264576^2 + 788015^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220120100001 - 2² = 2220120099997 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220120100021) 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 as a sum of consecutive naturals, namely, 1110060050000 + 1110060050001.

It is an arithmetic number, because the mean of its divisors is an integer number (1110060050001).

Almost surely, 2^{2220120100001} is an apocalyptic number.

It is an amenable number.

2220120100001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220120100001 is an equidigital number, since it uses as much as digits as its factorization.

2220120100001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2220120100001 its reverse (1000010210222), we get a palindrome (3220130310223).

The spelling of 2220120100001 in words is "two trillion, two hundred twenty billion, one hundred twenty million, one hundred thousand, one".