121143513 has 32 divisors (see below), whose sum is σ = 179853696. Its totient is φ = 72188928.

The previous prime is 121143511. The next prime is 121143521. The reversal of 121143513 is 315341121.

It is not a de Polignac number, because 121143513 - 2¹ = 121143511 is a prime.

It is a super-3 number, since 3×121143513³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121143513.

It is not an unprimeable number, because it can be changed into a prime (121143511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80395 + ... + 81887.

It is an arithmetic number, because the mean of its divisors is an integer number (5620428).

Almost surely, 2^121143513 is an apocalyptic number.

It is an amenable number.

121143513 is a deficient number, since it is larger than the sum of its proper divisors (58710183).

121143513 is a wasteful number, since it uses less digits than its factorization.

121143513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593.

The product of its digits is 360, while the sum is 21.

The square root of 121143513 is about 11006.5213850699. The cubic root of 121143513 is about 494.8042119281.

Adding to 121143513 its reverse (315341121), we get a palindrome (436484634).

The spelling of 121143513 in words is "one hundred twenty-one million, one hundred forty-three thousand, five hundred thirteen".