121340322351 has 10 divisors (see below), whose sum is σ = 181261469312. Its totient is φ = 80893548180.

The previous prime is 121340322317. The next prime is 121340322359. The reversal of 121340322351 is 153223043121.

121340322351 is a `hidden beast` number, since 1 + 21 + 3 + 403 + 2 + 235 + 1 = 666.

It is not a de Polignac number, because 121340322351 - 2¹¹ = 121340320303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340322359) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 749014255 + ... + 749014416.

Almost surely, 2^121340322351 is an apocalyptic number.

121340322351 is a deficient number, since it is larger than the sum of its proper divisors (59921146961).

121340322351 is an equidigital number, since it uses as much as digits as its factorization.

121340322351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498028683 (or 1498028674 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 121340322351 its reverse (153223043121), we get a palindrome (274563365472).

The spelling of 121340322351 in words is "one hundred twenty-one billion, three hundred forty million, three hundred twenty-two thousand, three hundred fifty-one".