1161212330330 has 32 divisors (see below), whose sum is σ = 2293436499984. Its totient is φ = 420665596416.

The previous prime is 1161212330309. The next prime is 1161212330347. The reversal of 1161212330330 is 330332121611.

It can be written as a sum of positive squares in 8 ways, for example, as 187905777361 + 973306552969 = 433481^2 + 986563^2 .

It is a super-2 number, since 2×1161212330330² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1161212330330.

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, 84261059 + ... + 84274838.

Almost surely, 2^{1161212330330} is an apocalyptic number.

1161212330330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161212330330 is a deficient number, since it is larger than the sum of its proper divisors (1132224169654).

1161212330330 is a wasteful number, since it uses less digits than its factorization.

1161212330330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168535970.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 1161212330330 its reverse (330332121611), we get a palindrome (1491544451941).

The spelling of 1161212330330 in words is "one trillion, one hundred sixty-one billion, two hundred twelve million, three hundred thirty thousand, three hundred thirty".