1222201000001 has 8 divisors (see below), whose sum is σ = 1264903156200. Its totient is φ = 1179535996800.

The previous prime is 1222200999997. The next prime is 1222201000019. The reversal of 1222201000001 is 1000001022221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34068299776 + 1188132700225 = 184576^2 + 1090015^2 .

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 1222201000001 - 2² = 1222200999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222201000021) 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, 9221300 + ... + 9352901.

It is an arithmetic number, because the mean of its divisors is an integer number (158112894525).

Almost surely, 2^{1222201000001} is an apocalyptic number.

It is an amenable number.

1222201000001 is a deficient number, since it is larger than the sum of its proper divisors (42702156199).

1222201000001 is a wasteful number, since it uses less digits than its factorization.

1222201000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18576499.

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

Adding to 1222201000001 its reverse (1000001022221), we get a palindrome (2222202022222).

The spelling of 1222201000001 in words is "one trillion, two hundred twenty-two billion, two hundred one million, one", and thus it is an aban number.