1200100099021 has 8 divisors (see below), whose sum is σ = 1203355301760. Its totient is φ = 1196849306352.

The previous prime is 1200100099013. The next prime is 1200100099057. The reversal of 1200100099021 is 1209900010021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200100099021 - 2³ = 1200100099013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200100096021) 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, 557161 + ... + 1646398.

It is an arithmetic number, because the mean of its divisors is an integer number (150419412720).

Almost surely, 2^{1200100099021} is an apocalyptic number.

It is an amenable number.

1200100099021 is a deficient number, since it is larger than the sum of its proper divisors (3255202739).

1200100099021 is an equidigital number, since it uses as much as digits as its factorization.

1200100099021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205035.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 1200100099021 in words is "one trillion, two hundred billion, one hundred million, ninety-nine thousand, twenty-one".