1120221221220 has 120 divisors (see below), whose sum is σ = 3548969795448. Its totient is φ = 295767936000.

The previous prime is 1120221221191. The next prime is 1120221221239. The reversal of 1120221221220 is 221221220211.

It is a happy number.

1120221221220 is a `hidden beast` number, since 1 + 1 + 2 + 0 + 221 + 221 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 779321715264 + 340899505956 = 882792^2 + 583866^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1120221221193 and 1120221221202.

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, 3259621 + ... + 3586860.

Almost surely, 2^{1120221221220} is an apocalyptic number.

1120221221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120221221220 is an abundant number, since it is smaller than the sum of its proper divisors (2428748574228).

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

1120221221220 is a wasteful number, since it uses less digits than its factorization.

1120221221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6846603 (or 6846592 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1120221221220 its reverse (221221220211), we get a palindrome (1341442441431).

The spelling of 1120221221220 in words is "one trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty".