22012101928 has 8 divisors (see below), whose sum is σ = 41272691130. Its totient is φ = 11006050960.

The previous prime is 22012101911. The next prime is 22012101929. The reversal of 22012101928 is 82910121022.

It can be written as a sum of positive squares in only one way, i.e., 18123082884 + 3889019044 = 134622^2 + 62362^2 .

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

It is a super-2 number, since 2×22012101928² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22012101896 and 22012101905.

It is not an unprimeable number, because it can be changed into a prime (22012101929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375756363 + ... + 1375756378.

Almost surely, 2^22012101928 is an apocalyptic number.

It is an amenable number.

22012101928 is a deficient number, since it is larger than the sum of its proper divisors (19260589202).

22012101928 is a wasteful number, since it uses less digits than its factorization.

22012101928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751512747 (or 2751512743 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 22012101928 in words is "twenty-two billion, twelve million, one hundred one thousand, nine hundred twenty-eight".