1223312133220 has 24 divisors (see below), whose sum is σ = 2581995871224. Its totient is φ = 486840969216.

The previous prime is 1223312133217. The next prime is 1223312133257. The reversal of 1223312133220 is 223312133221.

It can be written as a sum of positive squares in 4 ways, for example, as 862361105956 + 360951027264 = 928634^2 + 600792^2 .

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 7 ways as a sum of consecutive naturals, for example, 155238717 + ... + 155246596.

It is an arithmetic number, because the mean of its divisors is an integer number (107583161301).

Almost surely, 2^{1223312133220} is an apocalyptic number.

1223312133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223312133220 is an abundant number, since it is smaller than the sum of its proper divisors (1358683738004).

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

1223312133220 is a wasteful number, since it uses less digits than its factorization.

1223312133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310485519 (or 310485517 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1223312133220 its reverse (223312133221), we get a palindrome (1446624266441).

Subtracting from 1223312133220 its reverse (223312133221), we obtain a palindrome (999999999999).

The spelling of 1223312133220 in words is "one trillion, two hundred twenty-three billion, three hundred twelve million, one hundred thirty-three thousand, two hundred twenty".