1226021541800 has 192 divisors, whose sum is σ = 3164371574400. Its totient is φ = 437996160000.

The previous prime is 1226021541779. The next prime is 1226021541853. The reversal of 1226021541800 is 81451206221.

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 47 ways as a sum of consecutive naturals, for example, 123324830 + ... + 123334770.

It is an arithmetic number, because the mean of its divisors is an integer number (16481101950).

Almost surely, 2^{1226021541800} is an apocalyptic number.

1226021541800 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 1226021541800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1582185787200).

1226021541800 is an abundant number, since it is smaller than the sum of its proper divisors (1938350032600).

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

1226021541800 is a wasteful number, since it uses less digits than its factorization.

1226021541800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10948 (or 10939 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 1226021541800 in words is "one trillion, two hundred twenty-six billion, twenty-one million, five hundred forty-one thousand, eight hundred".