121511414433 has 8 divisors (see below), whose sum is σ = 162114196608. Its totient is φ = 80958120944.

The previous prime is 121511414407. The next prime is 121511414449. The reversal of 121511414433 is 334414115121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121511414433 - 2⁹ = 121511413921 is a prime.

It is a super-2 number, since 2×121511414433² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121511414433.

It is not an unprimeable number, because it can be changed into a prime (121511414473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12366441 + ... + 12376262.

It is an arithmetic number, because the mean of its divisors is an integer number (20264274576).

Almost surely, 2^121511414433 is an apocalyptic number.

It is an amenable number.

121511414433 is a deficient number, since it is larger than the sum of its proper divisors (40602782175).

121511414433 is a wasteful number, since it uses less digits than its factorization.

121511414433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24744343.

The product of its digits is 5760, while the sum is 30.

Adding to 121511414433 its reverse (334414115121), we get a palindrome (455925529554).

The spelling of 121511414433 in words is "one hundred twenty-one billion, five hundred eleven million, four hundred fourteen thousand, four hundred thirty-three".