22116661311601 has 8 divisors (see below), whose sum is σ = 24173049176064. Its totient is φ = 20144207645760.

The previous prime is 22116661311551. The next prime is 22116661311611. The reversal of 22116661311601 is 10611316661122.

It is a happy number.

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 22116661311601 - 2¹⁷ = 22116661180529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22116661311611) 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, 20983549105 + ... + 20983550158.

It is an arithmetic number, because the mean of its divisors is an integer number (3021631147008).

Almost surely, 2^{22116661311601} is an apocalyptic number.

It is an amenable number.

22116661311601 is a deficient number, since it is larger than the sum of its proper divisors (2056387864463).

22116661311601 is a wasteful number, since it uses less digits than its factorization.

22116661311601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41967099311.

The product of its (nonzero) digits is 15552, while the sum is 37.

Adding to 22116661311601 its reverse (10611316661122), we get a palindrome (32727977972723).

The spelling of 22116661311601 in words is "twenty-two trillion, one hundred sixteen billion, six hundred sixty-one million, three hundred eleven thousand, six hundred one".