1220112001220 has 48 divisors (see below), whose sum is σ = 2928603807360. Its totient is φ = 418276257024.

The previous prime is 1220112001187. The next prime is 1220112001231. The reversal of 1220112001220 is 221002110221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1220112001195 and 1220112001204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740552 + ... + 1728768.

It is an arithmetic number, because the mean of its divisors is an integer number (61012579320).

Almost surely, 2^{1220112001220} is an apocalyptic number.

1220112001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220112001220 is an abundant number, since it is smaller than the sum of its proper divisors (1708491806140).

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

1220112001220 is a wasteful number, since it uses less digits than its factorization.

1220112001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997052 (or 997050 counting only the distinct ones).

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

Adding to 1220112001220 its reverse (221002110221), we get a palindrome (1441114111441).

The spelling of 1220112001220 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one thousand, two hundred twenty".