1223110310220 has 96 divisors (see below), whose sum is σ = 3970676989440. Its totient is φ = 311981757120.

The previous prime is 1223110310179. The next prime is 1223110310231. The reversal of 1223110310220 is 220130113221.

1223110310220 is a `hidden beast` number, since 1 + 2 + 23 + 110 + 310 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1223110310193 and 1223110310202.

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 31 ways as a sum of consecutive naturals, for example, 49227126 + ... + 49251965.

It is an arithmetic number, because the mean of its divisors is an integer number (41361218640).

Almost surely, 2^{1223110310220} is an apocalyptic number.

1223110310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223110310220 is an abundant number, since it is smaller than the sum of its proper divisors (2747566679220).

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

1223110310220 is a wasteful number, since it uses less digits than its factorization.

1223110310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98479132 (or 98479124 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1223110310220 its reverse (220130113221), we get a palindrome (1443240423441).

The spelling of 1223110310220 in words is "one trillion, two hundred twenty-three billion, one hundred ten million, three hundred ten thousand, two hundred twenty".