1224444432420 has 144 divisors (see below), whose sum is σ = 4128247311552. Its totient is φ = 291234328320.

The previous prime is 1224444432359. The next prime is 1224444432457. The reversal of 1224444432420 is 242344444221.

1224444432420 is a `hidden beast` number, since 1 + 224 + 4 + 4 + 4 + 4 + 3 + 2 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5729082 + ... + 5938961.

It is an arithmetic number, because the mean of its divisors is an integer number (28668384108).

Almost surely, 2^{1224444432420} is an apocalyptic number.

1224444432420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224444432420 is an abundant number, since it is smaller than the sum of its proper divisors (2903802879132).

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

1224444432420 is a wasteful number, since it uses less digits than its factorization.

1224444432420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11668122 (or 11668117 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 1224444432420 its reverse (242344444221), we get a palindrome (1466788876641).

The spelling of 1224444432420 in words is "one trillion, two hundred twenty-four billion, four hundred forty-four million, four hundred thirty-two thousand, four hundred twenty".