121213043234343 has 24 divisors (see below), whose sum is σ = 175223172945600. Its totient is φ = 80745177219840.

The previous prime is 121213043234333. The next prime is 121213043234359. The reversal of 121213043234343 is 343432340312121.

121213043234343 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 1 + 304 + 3 + 2 + 3 + 4 + 343 = 666.

It is not a de Polignac number, because 121213043234343 - 2⁹ = 121213043233831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121213043234298 and 121213043234307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121213043234333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72520978 + ... + 74173568.

It is an arithmetic number, because the mean of its divisors is an integer number (7300965539400).

Almost surely, 2^{121213043234343} is an apocalyptic number.

121213043234343 is a deficient number, since it is larger than the sum of its proper divisors (54010129711257).

121213043234343 is a wasteful number, since it uses less digits than its factorization.

121213043234343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658999 (or 1658996 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 121213043234343 its reverse (343432340312121), we get a palindrome (464645383546464).

The spelling of 121213043234343 in words is "one hundred twenty-one trillion, two hundred thirteen billion, forty-three million, two hundred thirty-four thousand, three hundred forty-three".