121345141535 has 4 divisors (see below), whose sum is σ = 145614169848. Its totient is φ = 97076113224.

The previous prime is 121345141469. The next prime is 121345141579. The reversal of 121345141535 is 535141543121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535141543121 = 911 ⋅587422111.

It is a cyclic number.

It is not a de Polignac number, because 121345141535 - 2²⁶ = 121278032671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121345141495 and 121345141504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12134514149 + ... + 12134514158.

It is an arithmetic number, because the mean of its divisors is an integer number (36403542462).

Almost surely, 2^121345141535 is an apocalyptic number.

121345141535 is a deficient number, since it is larger than the sum of its proper divisors (24269028313).

121345141535 is an equidigital number, since it uses as much as digits as its factorization.

121345141535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24269028312.

The product of its digits is 36000, while the sum is 35.

Adding to 121345141535 its reverse (535141543121), we get a palindrome (656486684656).

The spelling of 121345141535 in words is "one hundred twenty-one billion, three hundred forty-five million, one hundred forty-one thousand, five hundred thirty-five".