121355303433 has 32 divisors (see below), whose sum is σ = 199887609600. Its totient is φ = 63773588736.

The previous prime is 121355303393. The next prime is 121355303453. The reversal of 121355303433 is 334303553121.

It is not a de Polignac number, because 121355303433 - 2²¹ = 121353206281 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121355303394 and 121355303403.

It is not an unprimeable number, because it can be changed into a prime (121355303453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752818 + ... + 899691.

It is an arithmetic number, because the mean of its divisors is an integer number (6246487800).

Almost surely, 2^121355303433 is an apocalyptic number.

121355303433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121355303433 is a deficient number, since it is larger than the sum of its proper divisors (78532306167).

121355303433 is a wasteful number, since it uses less digits than its factorization.

121355303433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652801.

The product of its (nonzero) digits is 48600, while the sum is 33.

Adding to 121355303433 its reverse (334303553121), we get a palindrome (455658856554).

The spelling of 121355303433 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred three thousand, four hundred thirty-three".