22219678216 has 8 divisors (see below), whose sum is σ = 41661896670. Its totient is φ = 11109839104.

The previous prime is 22219678199. The next prime is 22219678219. The reversal of 22219678216 is 61287691222.

It can be written as a sum of positive squares in only one way, i.e., 11434024900 + 10785653316 = 106930^2 + 103854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×22219678216⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (22219678219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388729881 + ... + 1388729896.

Almost surely, 2^22219678216 is an apocalyptic number.

It is an amenable number.

22219678216 is a deficient number, since it is larger than the sum of its proper divisors (19442218454).

22219678216 is a wasteful number, since it uses less digits than its factorization.

22219678216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777459783 (or 2777459779 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The spelling of 22219678216 in words is "twenty-two billion, two hundred nineteen million, six hundred seventy-eight thousand, two hundred sixteen".