1210002220001 has 2 divisors, whose sum is σ = 1210002220002. Its totient is φ = 1210002220000.

The previous prime is 1210002219997. The next prime is 1210002220003. The reversal of 1210002220001 is 1000222000121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1179569766400 + 30432453601 = 1086080^2 + 174449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210002220001 - 2² = 1210002219997 is a prime.

Together with 1210002220003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1210002220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605001110000 + 605001110001.

It is an arithmetic number, because the mean of its divisors is an integer number (605001110001).

Almost surely, 2^{1210002220001} is an apocalyptic number.

It is an amenable number.

1210002220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210002220001 is an equidigital number, since it uses as much as digits as its factorization.

1210002220001 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 1210002220001 its reverse (1000222000121), we get a palindrome (2210224220122).

The spelling of 1210002220001 in words is "one trillion, two hundred ten billion, two million, two hundred twenty thousand, one".