121313205256634 has 16 divisors (see below), whose sum is σ = 182461291104960. Its totient is φ = 60492995831520.

The previous prime is 121313205256589. The next prime is 121313205256673. The reversal of 121313205256634 is 436652502313121.

It is a super-4 number, since 4×121313205256634⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54136907 + ... + 56333214.

It is an arithmetic number, because the mean of its divisors is an integer number (11403830694060).

Almost surely, 2^{121313205256634} is an apocalyptic number.

121313205256634 is a deficient number, since it is larger than the sum of its proper divisors (61148085848326).

121313205256634 is a wasteful number, since it uses less digits than its factorization.

121313205256634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110471605.

The product of its (nonzero) digits is 777600, while the sum is 44.

Adding to 121313205256634 its reverse (436652502313121), we get a palindrome (557965707569755).

The spelling of 121313205256634 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred five million, two hundred fifty-six thousand, six hundred thirty-four".