1222744727520 has 240 divisors, whose sum is σ = 4502891463840. Its totient is φ = 311888434176.

The previous prime is 1222744727509. The next prime is 1222744727629. The reversal of 1222744727520 is 257274472221.

1222744727520 is a `hidden beast` number, since 1 + 2 + 22 + 74 + 472 + 75 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1752955 + ... + 2349114.

It is an arithmetic number, because the mean of its divisors is an integer number (18762047766).

Almost surely, 2^{1222744727520} is an apocalyptic number.

1222744727520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222744727520 is an abundant number, since it is smaller than the sum of its proper divisors (3280146736320).

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

1222744727520 is a wasteful number, since it uses less digits than its factorization.

1222744727520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102119 (or 4102102 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 45.

The spelling of 1222744727520 in words is "one trillion, two hundred twenty-two billion, seven hundred forty-four million, seven hundred twenty-seven thousand, five hundred twenty".