1223224350520 has 32 divisors (see below), whose sum is σ = 2914152130800. Its totient is φ = 460507990528.

The previous prime is 1223224350427. The next prime is 1223224350521. The reversal of 1223224350520 is 250534223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223224350521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899428990 + ... + 899430349.

Almost surely, 2^{1223224350520} is an apocalyptic number.

1223224350520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223224350520 is an abundant number, since it is smaller than the sum of its proper divisors (1690927780280).

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

1223224350520 is a wasteful number, since it uses less digits than its factorization.

1223224350520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798859367 (or 1798859363 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 1223224350520 its reverse (250534223221), we get a palindrome (1473758573741).

The spelling of 1223224350520 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-four million, three hundred fifty thousand, five hundred twenty".