121315310534 has 32 divisors (see below), whose sum is σ = 204984041472. Its totient is φ = 53347752000.

The previous prime is 121315310531. The next prime is 121315310561. The reversal of 121315310534 is 435013513121.

It is a junction number, because it is equal to n+sod(n) for n = 121315310497 and 121315310506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121315310531) 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 15 ways as a sum of consecutive naturals, for example, 2286434 + ... + 2338890.

It is an arithmetic number, because the mean of its divisors is an integer number (6405751296).

Almost surely, 2^121315310534 is an apocalyptic number.

121315310534 is a deficient number, since it is larger than the sum of its proper divisors (83668730938).

121315310534 is a wasteful number, since it uses less digits than its factorization.

121315310534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55892.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 121315310534 its reverse (435013513121), we get a palindrome (556328823655).

The spelling of 121315310534 in words is "one hundred twenty-one billion, three hundred fifteen million, three hundred ten thousand, five hundred thirty-four".