1223100230220 has 144 divisors (see below), whose sum is σ = 4069961925120. Its totient is φ = 294852585600.

The previous prime is 1223100230201. The next prime is 1223100230221. The reversal of 1223100230220 is 220320013221.

1223100230220 is a `hidden beast` number, since 122 + 310 + 0 + 230 + 2 + 2 + 0 = 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 = 1223100230193 and 1223100230202.

It is not an unprimeable number, because it can be changed into a prime (1223100230221) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1371076 + ... + 2079915.

It is an arithmetic number, because the mean of its divisors is an integer number (28263624480).

Almost surely, 2^{1223100230220} is an apocalyptic number.

1223100230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223100230220 is an abundant number, since it is smaller than the sum of its proper divisors (2846861694900).

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

1223100230220 is a wasteful number, since it uses less digits than its factorization.

1223100230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451196 (or 3451191 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1223100230220 its reverse (220320013221), we get a palindrome (1443420243441).

The spelling of 1223100230220 in words is "one trillion, two hundred twenty-three billion, one hundred million, two hundred thirty thousand, two hundred twenty".