121330032320205 has 24 divisors (see below), whose sum is σ = 210433859482392. Its totient is φ = 64669821300864.

The previous prime is 121330032320177. The next prime is 121330032320209. The reversal of 121330032320205 is 502023230033121.

It is a happy number.

121330032320205 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 300 + 32 + 320 + 2 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8001509745636 + 113328522574569 = 2828694^2 + 10645587^2 .

It is not a de Polignac number, because 121330032320205 - 2⁹ = 121330032319693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121330032320209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 823451974 + ... + 823599303.

It is an arithmetic number, because the mean of its divisors is an integer number (8768077478433).

Almost surely, 2^{121330032320205} is an apocalyptic number.

121330032320205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121330032320205 is a deficient number, since it is larger than the sum of its proper divisors (89103827162187).

121330032320205 is a wasteful number, since it uses less digits than its factorization.

121330032320205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647052925 (or 1647052922 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 121330032320205 its reverse (502023230033121), we get a palindrome (623353262353326).

The spelling of 121330032320205 in words is "one hundred twenty-one trillion, three hundred thirty billion, thirty-two million, three hundred twenty thousand, two hundred five".