1220000101120 has 72 divisors (see below), whose sum is σ = 2984457841344. Its totient is φ = 477617037312.

The previous prime is 1220000101097. The next prime is 1220000101121. The reversal of 1220000101120 is 211010000221.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1220000101097 and 1220000101106.

It is not an unprimeable number, because it can be changed into a prime (1220000101121) 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, 10079469 + ... + 10199788.

It is an arithmetic number, because the mean of its divisors is an integer number (41450803352).

Almost surely, 2^{1220000101120} is an apocalyptic number.

1220000101120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220000101120 is an abundant number, since it is smaller than the sum of its proper divisors (1764457740224).

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

1220000101120 is an equidigital number, since it uses as much as digits as its factorization.

1220000101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20279325 (or 20279311 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1220000101120 its reverse (211010000221), we get a palindrome (1431010101341).

It can be divided in two parts, 1220000101 and 120, that added together give a palindrome (1220000221).

The spelling of 1220000101120 in words is "one trillion, two hundred twenty billion, one hundred one thousand, one hundred twenty".