121402656005 has 8 divisors (see below), whose sum is σ = 149620570872. Its totient is φ = 94497202368.

The previous prime is 121402655953. The next prime is 121402656013. The reversal of 121402656005 is 500656204121.

It can be written as a sum of positive squares in 4 ways, for example, as 19054489444 + 102348166561 = 138038^2 + 319919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121402656005 - 2⁸ = 121402655749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328115102 + ... + 328115471.

It is an arithmetic number, because the mean of its divisors is an integer number (18702571359).

Almost surely, 2^121402656005 is an apocalyptic number.

It is an amenable number.

121402656005 is a deficient number, since it is larger than the sum of its proper divisors (28217914867).

121402656005 is an equidigital number, since it uses as much as digits as its factorization.

121402656005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656230615.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 121402656005 in words is "one hundred twenty-one billion, four hundred two million, six hundred fifty-six thousand, five".