121100102002109 has 4 divisors (see below), whose sum is σ = 122633014685760. Its totient is φ = 119567189318460.

The previous prime is 121100102002073. The next prime is 121100102002123. The reversal of 121100102002109 is 901200201001121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121100102002109 - 2²⁸ = 121099833566653 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 (121100102002709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766456341707 + ... + 766456341864.

It is an arithmetic number, because the mean of its divisors is an integer number (30658253671440).

Almost surely, 2^{121100102002109} is an apocalyptic number.

It is an amenable number.

121100102002109 is a deficient number, since it is larger than the sum of its proper divisors (1532912683651).

121100102002109 is an equidigital number, since it uses as much as digits as its factorization.

121100102002109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532912683650.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 121100102002109 in words is "one hundred twenty-one trillion, one hundred billion, one hundred two million, two thousand, one hundred nine".