121478400001 has 8 divisors (see below), whose sum is σ = 138885528320. Its totient is φ = 104084539488.

The previous prime is 121478399971. The next prime is 121478400011. The reversal of 121478400001 is 100004874121.

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 121478400001 - 2¹⁷ = 121478268929 is a prime.

It is a super-3 number, since 3×121478400001³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121478400011) by changing a digit.

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, 3297321 + ... + 3333958.

It is an arithmetic number, because the mean of its divisors is an integer number (17360691040).

Almost surely, 2^121478400001 is an apocalyptic number.

It is an amenable number.

121478400001 is a deficient number, since it is larger than the sum of its proper divisors (17407128319).

121478400001 is an equidigital number, since it uses as much as digits as its factorization.

121478400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633903.

The product of its (nonzero) digits is 1792, while the sum is 28.

It can be divided in two parts, 12147 and 8400001, that added together give a palindrome (8412148).

The spelling of 121478400001 in words is "one hundred twenty-one billion, four hundred seventy-eight million, four hundred thousand, one".