121018036533 has 4 divisors (see below), whose sum is σ = 161357382048. Its totient is φ = 80678691020.

The previous prime is 121018036471. The next prime is 121018036543. The reversal of 121018036533 is 335630810121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121018036533 - 2⁸ = 121018036277 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121018036494 and 121018036503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121018036543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20169672753 + ... + 20169672758.

It is an arithmetic number, because the mean of its divisors is an integer number (40339345512).

Almost surely, 2^121018036533 is an apocalyptic number.

It is an amenable number.

121018036533 is a deficient number, since it is larger than the sum of its proper divisors (40339345515).

121018036533 is an equidigital number, since it uses as much as digits as its factorization.

121018036533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40339345514.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 121018036533 its reverse (335630810121), we get a palindrome (456648846654).

The spelling of 121018036533 in words is "one hundred twenty-one billion, eighteen million, thirty-six thousand, five hundred thirty-three".