121315051514 has 16 divisors (see below), whose sum is σ = 182762771688. Its totient is φ = 60394340352.

The previous prime is 121315051447. The next prime is 121315051519. The reversal of 121315051514 is 415150513121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 114706174489 + 6608877025 = 338683^2 + 81295^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121315051519) 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, 1116404 + ... + 1220240.

Almost surely, 2^121315051514 is an apocalyptic number.

121315051514 is a deficient number, since it is larger than the sum of its proper divisors (61447720174).

121315051514 is a wasteful number, since it uses less digits than its factorization.

121315051514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106369.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 121315051514 its reverse (415150513121), we get a palindrome (536465564635).

The spelling of 121315051514 in words is "one hundred twenty-one billion, three hundred fifteen million, fifty-one thousand, five hundred fourteen".