1000121001099 has 24 divisors (see below), whose sum is σ = 1505356744080. Its totient is φ = 589751933760.

The previous prime is 1000121001017. The next prime is 1000121001127. The reversal of 1000121001099 is 9901001210001.

It is not a de Polignac number, because 1000121001099 - 2¹³ = 1000120992907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000121002099) 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 23 ways as a sum of consecutive naturals, for example, 37218384 + ... + 37245245.

It is an arithmetic number, because the mean of its divisors is an integer number (62723197670).

Almost surely, 2^{1000121001099} is an apocalyptic number.

1000121001099 is a deficient number, since it is larger than the sum of its proper divisors (505235742981).

1000121001099 is a wasteful number, since it uses less digits than its factorization.

1000121001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74463691 (or 74463680 counting only the distinct ones).

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

The spelling of 1000121001099 in words is "one trillion, one hundred twenty-one million, one thousand, ninety-nine".