121540313002 has 16 divisors (see below), whose sum is σ = 183374755200. Its totient is φ = 60415603920.

The previous prime is 121540312991. The next prime is 121540313003. The reversal of 121540313002 is 200313045121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121540313003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150899 + ... + 1252057.

It is an arithmetic number, because the mean of its divisors is an integer number (11460922200).

Almost surely, 2^121540313002 is an apocalyptic number.

121540313002 is a deficient number, since it is larger than the sum of its proper divisors (61834442198).

121540313002 is a wasteful number, since it uses less digits than its factorization.

121540313002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104661.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 121540313002 its reverse (200313045121), we get a palindrome (321853358123).

The spelling of 121540313002 in words is "one hundred twenty-one billion, five hundred forty million, three hundred thirteen thousand, two".