30121440305 has 16 divisors (see below), whose sum is σ = 39438382464. Its totient is φ = 21902791680.

The previous prime is 30121440299. The next prime is 30121440397. The reversal of 30121440305 is 50304412103.

It is not a de Polignac number, because 30121440305 - 2⁴ = 30121440289 is a prime.

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, 305324 + ... + 391746.

It is an arithmetic number, because the mean of its divisors is an integer number (2464898904).

Almost surely, 2^30121440305 is an apocalyptic number.

It is an amenable number.

30121440305 is a deficient number, since it is larger than the sum of its proper divisors (9316942159).

30121440305 is a wasteful number, since it uses less digits than its factorization.

30121440305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92776.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 30121440305 its reverse (50304412103), we get a palindrome (80425852408).

The spelling of 30121440305 in words is "thirty billion, one hundred twenty-one million, four hundred forty thousand, three hundred five".