100122011001 has 12 divisors (see below), whose sum is σ = 144623444628. Its totient is φ = 66746732544.

The previous prime is 100122010993. The next prime is 100122011039. The reversal of 100122011001 is 100110221001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27059921001 + 73062090000 = 164499^2 + 270300^2 .

It is not a de Polignac number, because 100122011001 - 2³ = 100122010993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100122011201) 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 11 ways as a sum of consecutive naturals, for example, 782521 + ... + 901433.

It is an arithmetic number, because the mean of its divisors is an integer number (12051953719).

Almost surely, 2^100122011001 is an apocalyptic number.

It is an amenable number.

100122011001 is a deficient number, since it is larger than the sum of its proper divisors (44501433627).

100122011001 is a wasteful number, since it uses less digits than its factorization.

100122011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212472 (or 212469 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100122011001 its reverse (100110221001), we get a palindrome (200232232002).

The spelling of 100122011001 in words is "one hundred billion, one hundred twenty-two million, eleven thousand, one".