121355303352 has 32 divisors (see below), whose sum is σ = 321234627600. Its totient is φ = 38072251904.

The previous prime is 121355303341. The next prime is 121355303359. The reversal of 121355303352 is 253303553121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121355303359) 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 7 ways as a sum of consecutive naturals, for example, 148719327 + ... + 148720142.

Almost surely, 2^121355303352 is an apocalyptic number.

121355303352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121355303352 is an abundant number, since it is smaller than the sum of its proper divisors (199879324248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121355303352 is a wasteful number, since it uses less digits than its factorization.

121355303352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297439495 (or 297439491 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 33.

Adding to 121355303352 its reverse (253303553121), we get a palindrome (374658856473).

The spelling of 121355303352 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred three thousand, three hundred fifty-two".