1111123030212 has 72 divisors (see below), whose sum is σ = 3052473704280. Its totient is φ = 338747443200.

The previous prime is 1111123030211. The next prime is 1111123030243. The reversal of 1111123030212 is 2120303211111.

1111123030212 is a `hidden beast` number, since 11 + 111 + 230 + 302 + 12 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 45653159556 + 1065469870656 = 213666^2 + 1032216^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1111123030211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10839789 + ... + 10941812.

It is an arithmetic number, because the mean of its divisors is an integer number (42395468115).

Almost surely, 2^{1111123030212} is an apocalyptic number.

1111123030212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111123030212 is an abundant number, since it is smaller than the sum of its proper divisors (1941350674068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111123030212 is a wasteful number, since it uses less digits than its factorization.

1111123030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21781733 (or 21781728 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1111123030212 its reverse (2120303211111), we get a palindrome (3231426241323).

The spelling of 1111123030212 in words is "one trillion, one hundred eleven billion, one hundred twenty-three million, thirty thousand, two hundred twelve".