100000022100128 has 48 divisors (see below), whose sum is σ = 208456956255744. Its totient is φ = 47058601896960.

The previous prime is 100000022100127. The next prime is 100000022100197. The reversal of 100000022100128 is 821001220000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (100000022100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166363643 + ... + 166963653.

It is an arithmetic number, because the mean of its divisors is an integer number (4342853255328).

Almost surely, 2^{100000022100128} is an apocalyptic number.

It is an amenable number.

100000022100128 is an abundant number, since it is smaller than the sum of its proper divisors (108456934155616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100000022100128 is a wasteful number, since it uses less digits than its factorization.

100000022100128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906405 (or 906397 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100000022100128 its reverse (821001220000001), we get a palindrome (921001242100129).

The spelling of 100000022100128 in words is "one hundred trillion, twenty-two million, one hundred thousand, one hundred twenty-eight".