1223200232220 has 48 divisors (see below), whose sum is σ = 3434293029888. Its totient is φ = 325297930560.

The previous prime is 1223200232201. The next prime is 1223200232251. The reversal of 1223200232220 is 222320023221.

It is a super-2 number, since 2×1223200232220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 27752736 + ... + 27796775.

It is an arithmetic number, because the mean of its divisors is an integer number (71547771456).

Almost surely, 2^{1223200232220} is an apocalyptic number.

1223200232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223200232220 is an abundant number, since it is smaller than the sum of its proper divisors (2211092797668).

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

1223200232220 is a wasteful number, since it uses less digits than its factorization.

1223200232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55549890 (or 55549888 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 1223200232220 its reverse (222320023221), we get a palindrome (1445520255441).

The spelling of 1223200232220 in words is "one trillion, two hundred twenty-three billion, two hundred million, two hundred thirty-two thousand, two hundred twenty".