1220220101120 has 80 divisors (see below), whose sum is σ = 2941833382488. Its totient is φ = 485391237120.

The previous prime is 1220220101081. The next prime is 1220220101129. The reversal of 1220220101120 is 211010220221.

It can be written as a sum of positive squares in 4 ways, for example, as 981748052224 + 238472048896 = 990832^2 + 488336^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1220220101095 and 1220220101104.

It is not an unprimeable number, because it can be changed into a prime (1220220101129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853349 + ... + 1780068.

Almost surely, 2^{1220220101120} is an apocalyptic number.

1220220101120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220220101120 is an abundant number, since it is smaller than the sum of its proper divisors (1721613281368).

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

1220220101120 is an equidigital number, since it uses as much as digits as its factorization.

1220220101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633621 (or 2633605 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220220101120 its reverse (211010220221), we get a palindrome (1431230321341).

It can be divided in two parts, 1220220101 and 120, that added together give a palindrome (1220220221).

The spelling of 1220220101120 in words is "one trillion, two hundred twenty billion, two hundred twenty million, one hundred one thousand, one hundred twenty".