121230312134 has 4 divisors (see below), whose sum is σ = 181845468204. Its totient is φ = 60615156066.

The previous prime is 121230312109. The next prime is 121230312143. The reversal of 121230312134 is 431213032121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431213032121 = 223 ⋅1933690727.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30307578032 + ... + 30307578035.

It is an arithmetic number, because the mean of its divisors is an integer number (45461367051).

Almost surely, 2^121230312134 is an apocalyptic number.

121230312134 is a deficient number, since it is larger than the sum of its proper divisors (60615156070).

121230312134 is an equidigital number, since it uses as much as digits as its factorization.

121230312134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60615156069.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 121230312134 its reverse (431213032121), we get a palindrome (552443344255).

The spelling of 121230312134 in words is "one hundred twenty-one billion, two hundred thirty million, three hundred twelve thousand, one hundred thirty-four".