1230111102220 has 192 divisors, whose sum is σ = 3480669029376. Its totient is φ = 352665861120.

The previous prime is 1230111102179. The next prime is 1230111102281. The reversal of 1230111102220 is 222011110321.

It is a junction number, because it is equal to n+sod(n) for n = 1230111102194 and 1230111102203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5557102 + ... + 5774218.

It is an arithmetic number, because the mean of its divisors is an integer number (18128484528).

Almost surely, 2^{1230111102220} is an apocalyptic number.

1230111102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230111102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740334514688).

1230111102220 is an abundant number, since it is smaller than the sum of its proper divisors (2250557927156).

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

1230111102220 is a wasteful number, since it uses less digits than its factorization.

1230111102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217440 (or 217438 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1230111102220 its reverse (222011110321), we get a palindrome (1452122212541).

It can be divided in two parts, 1230111 and 102220, that added together give a palindrome (1332331).

The spelling of 1230111102220 in words is "one trillion, two hundred thirty billion, one hundred eleven million, one hundred two thousand, two hundred twenty".