1220453413240 has 32 divisors (see below), whose sum is σ = 2865412363680. Its totient is φ = 466956088192.

The previous prime is 1220453413229. The next prime is 1220453413303. The reversal of 1220453413240 is 423143540221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663288979 + ... + 663290818.

It is an arithmetic number, because the mean of its divisors is an integer number (89544136365).

Almost surely, 2^{1220453413240} is an apocalyptic number.

1220453413240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220453413240 is an abundant number, since it is smaller than the sum of its proper divisors (1644958950440).

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

1220453413240 is a wasteful number, since it uses less digits than its factorization.

1220453413240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326579831 (or 1326579827 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1220453413240 its reverse (423143540221), we get a palindrome (1643596953461).

The spelling of 1220453413240 in words is "one trillion, two hundred twenty billion, four hundred fifty-three million, four hundred thirteen thousand, two hundred forty".