121002102111109 has 8 divisors (see below), whose sum is σ = 121917341892600. Its totient is φ = 120088237598400.

The previous prime is 121002102111101. The next prime is 121002102111131. The reversal of 121002102111109 is 901111201200121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11788942851009 + 109213159260100 = 3433503^2 + 10450510^2 .

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 121002102111109 - 2³ = 121002102111101 is a prime.

It is a super-2 number, since 2×121002102111109² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121002102111109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002102111101) 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, 343640562 + ... + 343992499.

It is an arithmetic number, because the mean of its divisors is an integer number (15239667736575).

Almost surely, 2^{121002102111109} is an apocalyptic number.

It is an amenable number.

121002102111109 is a deficient number, since it is larger than the sum of its proper divisors (915239781491).

121002102111109 is a wasteful number, since it uses less digits than its factorization.

121002102111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687634391.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 121002102111109 in words is "one hundred twenty-one trillion, two billion, one hundred two million, one hundred eleven thousand, one hundred nine".