22118416849 has 4 divisors (see below), whose sum is σ = 22124796340. Its totient is φ = 22112037360.

The previous prime is 22118416847. The next prime is 22118416871. The reversal of 22118416849 is 94861481122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157251600 + 21961165249 = 12540^2 + 148193^2 .

It is a cyclic number.

It is not a de Polignac number, because 22118416849 - 2¹ = 22118416847 is a prime.

It is a super-2 number, since 2×22118416849² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22118416799 and 22118416808.

It is not an unprimeable number, because it can be changed into a prime (22118416847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3184542 + ... + 3191479.

It is an arithmetic number, because the mean of its divisors is an integer number (5531199085).

Almost surely, 2^22118416849 is an apocalyptic number.

It is an amenable number.

22118416849 is a deficient number, since it is larger than the sum of its proper divisors (6379491).

22118416849 is an equidigital number, since it uses as much as digits as its factorization.

22118416849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379490.

The product of its digits is 221184, while the sum is 46.

The spelling of 22118416849 in words is "twenty-two billion, one hundred eighteen million, four hundred sixteen thousand, eight hundred forty-nine".