1020121202099 has 8 divisors (see below), whose sum is σ = 1029623160720. Its totient is φ = 1010621844576.

The previous prime is 1020121202071. The next prime is 1020121202117. The reversal of 1020121202099 is 9902021210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020121202099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020121202059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142232 + ... + 1435434.

It is an arithmetic number, because the mean of its divisors is an integer number (128702895090).

Almost surely, 2^{1020121202099} is an apocalyptic number.

1020121202099 is a deficient number, since it is larger than the sum of its proper divisors (9501958621).

1020121202099 is a wasteful number, since it uses less digits than its factorization.

1020121202099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300549.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1020121202099 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred two thousand, ninety-nine".