121210202110109 has 8 divisors (see below), whose sum is σ = 138526592772288. Its totient is φ = 103893973323840.

The previous prime is 121210202110103. The next prime is 121210202110133. The reversal of 121210202110109 is 901011202012121.

It is a happy number.

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

It is not a de Polignac number, because 121210202110109 - 2³² = 121205907142813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210202110103) 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, 38860172 + ... + 41863269.

It is an arithmetic number, because the mean of its divisors is an integer number (17315824096536).

Almost surely, 2^{121210202110109} is an apocalyptic number.

It is an amenable number.

121210202110109 is a deficient number, since it is larger than the sum of its proper divisors (17316390662179).

121210202110109 is an equidigital number, since it uses as much as digits as its factorization.

121210202110109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80937955.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 121210202110109 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred two million, one hundred ten thousand, one hundred nine".