121302656315 has 4 divisors (see below), whose sum is σ = 145563187584. Its totient is φ = 97042125048.

The previous prime is 121302656297. The next prime is 121302656317. The reversal of 121302656315 is 513656203121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121302656315 - 2²² = 121298462011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121302656317) 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, 12130265627 + ... + 12130265636.

It is an arithmetic number, because the mean of its divisors is an integer number (36390796896).

Almost surely, 2^121302656315 is an apocalyptic number.

121302656315 is a deficient number, since it is larger than the sum of its proper divisors (24260531269).

121302656315 is an equidigital number, since it uses as much as digits as its factorization.

121302656315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24260531268.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 121302656315 its reverse (513656203121), we get a palindrome (634958859436).

The spelling of 121302656315 in words is "one hundred twenty-one billion, three hundred two million, six hundred fifty-six thousand, three hundred fifteen".