1205511130330 has 16 divisors (see below), whose sum is σ = 2336836960584. Its totient is φ = 445111801920.

The previous prime is 1205511130267. The next prime is 1205511130379. The reversal of 1205511130330 is 330311155021.

It can be written as a sum of positive squares in 4 ways, for example, as 830885117841 + 374626012489 = 911529^2 + 612067^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1205511130295 and 1205511130304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4636581141 + ... + 4636581400.

Almost surely, 2^{1205511130330} is an apocalyptic number.

1205511130330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205511130330 is a deficient number, since it is larger than the sum of its proper divisors (1131325830254).

1205511130330 is a wasteful number, since it uses less digits than its factorization.

1205511130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9273162561.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 1205511130330 its reverse (330311155021), we get a palindrome (1535822285351).

The spelling of 1205511130330 in words is "one trillion, two hundred five billion, five hundred eleven million, one hundred thirty thousand, three hundred thirty".