121304071281 has 8 divisors (see below), whose sum is σ = 166110079744. Its totient is φ = 78683721840.

The previous prime is 121304071253. The next prime is 121304071297. The reversal of 121304071281 is 182170403121.

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

It is not a de Polignac number, because 121304071281 - 2²⁵ = 121270516849 is a prime.

It is a super-2 number, since 2×121304071281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121304071201) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 546414625 + ... + 546414846.

It is an arithmetic number, because the mean of its divisors is an integer number (20763759968).

Almost surely, 2^121304071281 is an apocalyptic number.

It is an amenable number.

121304071281 is a deficient number, since it is larger than the sum of its proper divisors (44806008463).

121304071281 is a wasteful number, since it uses less digits than its factorization.

121304071281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092829511.

The product of its (nonzero) digits is 2688, while the sum is 30.

The spelling of 121304071281 in words is "one hundred twenty-one billion, three hundred four million, seventy-one thousand, two hundred eighty-one".