1722222116601 has 16 divisors (see below), whose sum is σ = 2673854285184. Its totient is φ = 965558490624.

The previous prime is 1722222116561. The next prime is 1722222116623. The reversal of 1722222116601 is 1066112222271.

It is not a de Polignac number, because 1722222116601 - 2⁷ = 1722222116473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1722222116651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773683576 + ... + 773685801.

It is an arithmetic number, because the mean of its divisors is an integer number (167115892824).

Almost surely, 2^{1722222116601} is an apocalyptic number.

It is an amenable number.

1722222116601 is a deficient number, since it is larger than the sum of its proper divisors (951632168583).

1722222116601 is a wasteful number, since it uses less digits than its factorization.

1722222116601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547369440.

The product of its (nonzero) digits is 8064, while the sum is 33.

Adding to 1722222116601 its reverse (1066112222271), we get a palindrome (2788334338872).

The spelling of 1722222116601 in words is "one trillion, seven hundred twenty-two billion, two hundred twenty-two million, one hundred sixteen thousand, six hundred one".