10001099121 has 32 divisors (see below), whose sum is σ = 14872854528. Its totient is φ = 5938658880.

The previous prime is 10001099111. The next prime is 10001099137. The reversal of 10001099121 is 12199010001.

It is not a de Polignac number, because 10001099121 - 2¹⁴ = 10001082737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10001099091 and 10001099100.

It is not an unprimeable number, because it can be changed into a prime (10001099111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91720 + ... + 168566.

It is an arithmetic number, because the mean of its divisors is an integer number (464776704).

Almost surely, 2^10001099121 is an apocalyptic number.

It is an amenable number.

10001099121 is a deficient number, since it is larger than the sum of its proper divisors (4871755407).

10001099121 is a wasteful number, since it uses less digits than its factorization.

10001099121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76981.

The product of its (nonzero) digits is 162, while the sum is 24.

The spelling of 10001099121 in words is "ten billion, one million, ninety-nine thousand, one hundred twenty-one".