121223331305 has 16 divisors (see below), whose sum is σ = 150094667520. Its totient is φ = 93936763392.

The previous prime is 121223331239. The next prime is 121223331311. The reversal of 121223331305 is 503133322121.

It is a cyclic number.

It is not a de Polignac number, because 121223331305 - 2⁸ = 121223331049 is a prime.

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, 2636195 + ... + 2681784.

It is an arithmetic number, because the mean of its divisors is an integer number (9380916720).

Almost surely, 2^121223331305 is an apocalyptic number.

It is an amenable number.

121223331305 is a deficient number, since it is larger than the sum of its proper divisors (28871336215).

121223331305 is an equidigital number, since it uses as much as digits as its factorization.

121223331305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318128.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 121223331305 its reverse (503133322121), we get a palindrome (624356653426).

The spelling of 121223331305 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred thirty-one thousand, three hundred five".