220030111312 has 30 divisors (see below), whose sum is σ = 468586857914. Its totient is φ = 100013686080.

The previous prime is 220030111309. The next prime is 220030111331. The reversal of 220030111312 is 213111030022.

It can be written as a sum of positive squares in only one way, i.e., 219957248016 + 72863296 = 468996^2 + 8536^2 .

It is a super-2 number, since 2×220030111312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 56824023 + ... + 56827894.

Almost surely, 2^220030111312 is an apocalyptic number.

220030111312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220030111312 is an abundant number, since it is smaller than the sum of its proper divisors (248556746602).

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

220030111312 is a wasteful number, since it uses less digits than its factorization.

220030111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113651947 (or 113651930 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 220030111312 its reverse (213111030022), we get a palindrome (433141141334).

The spelling of 220030111312 in words is "two hundred twenty billion, thirty million, one hundred eleven thousand, three hundred twelve".