1220756244160 has 56 divisors (see below), whose sum is σ = 3059921916720. Its totient is φ = 462602363904.

The previous prime is 1220756244121. The next prime is 1220756244163. The reversal of 1220756244160 is 614426570221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1220756244163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100385059 + ... + 100397218.

Almost surely, 2^{1220756244160} is an apocalyptic number.

1220756244160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220756244160 is an abundant number, since it is smaller than the sum of its proper divisors (1839165672560).

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

1220756244160 is a wasteful number, since it uses less digits than its factorization.

1220756244160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200782313 (or 200782303 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 1220756244160 in words is "one trillion, two hundred twenty billion, seven hundred fifty-six million, two hundred forty-four thousand, one hundred sixty".