1226544621120 has 2688 divisors, whose sum is σ = 5711708160000. Its totient is φ = 247269335040.

The previous prime is 1226544621091. The next prime is 1226544621163. The reversal of 1226544621120 is 211264456221.

1226544621120 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 5 + 4 + 4 + 621 + 1 + 20 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 15525881241 + ... + 15525881319.

Almost surely, 2^{1226544621120} is an apocalyptic number.

1226544621120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226544621120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2855854080000).

1226544621120 is an abundant number, since it is smaller than the sum of its proper divisors (4485163538880).

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

1226544621120 is a wasteful number, since it uses less digits than its factorization.

1226544621120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 1226544621120 in words is "one trillion, two hundred twenty-six billion, five hundred forty-four million, six hundred twenty-one thousand, one hundred twenty".