121303361305 has 16 divisors (see below), whose sum is σ = 171725313024. Its totient is φ = 80496239040.

The previous prime is 121303361287. The next prime is 121303361353. The reversal of 121303361305 is 503163303121.

It is not a de Polignac number, because 121303361305 - 2²¹ = 121301264153 is a prime.

It is a super-3 number, since 3×121303361305³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55899082 + ... + 55901251.

It is an arithmetic number, because the mean of its divisors is an integer number (10732832064).

Almost surely, 2^121303361305 is an apocalyptic number.

It is an amenable number.

121303361305 is a deficient number, since it is larger than the sum of its proper divisors (50421951719).

121303361305 is a wasteful number, since it uses less digits than its factorization.

121303361305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111800376.

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 121303361305 its reverse (503163303121), we get a palindrome (624466664426).

The spelling of 121303361305 in words is "one hundred twenty-one billion, three hundred three million, three hundred sixty-one thousand, three hundred five".