121335105315 has 16 divisors (see below), whose sum is σ = 194142816000. Its totient is φ = 64709840352.

The previous prime is 121335105301. The next prime is 121335105319. The reversal of 121335105315 is 513501533121.

It is not a de Polignac number, because 121335105315 - 2¹⁶ = 121335039779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121335105319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375786 + ... + 619584.

It is an arithmetic number, because the mean of its divisors is an integer number (12133926000).

Almost surely, 2^121335105315 is an apocalyptic number.

121335105315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121335105315 is a deficient number, since it is larger than the sum of its proper divisors (72807710685).

121335105315 is a wasteful number, since it uses less digits than its factorization.

121335105315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276986.

The product of its (nonzero) digits is 6750, while the sum is 30.

Adding to 121335105315 its reverse (513501533121), we get a palindrome (634836638436).

The spelling of 121335105315 in words is "one hundred twenty-one billion, three hundred thirty-five million, one hundred five thousand, three hundred fifteen".