1220211011112 has 32 divisors (see below), whose sum is σ = 3132974220000. Its totient is φ = 395744111424.

The previous prime is 1220211011053. The next prime is 1220211011143. The reversal of 1220211011112 is 2111101120221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220211011091 and 1220211011100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687054862 + ... + 687056637.

It is an arithmetic number, because the mean of its divisors is an integer number (97905444375).

Almost surely, 2^{1220211011112} is an apocalyptic number.

1220211011112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220211011112 is an abundant number, since it is smaller than the sum of its proper divisors (1912763208888).

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

1220211011112 is a wasteful number, since it uses less digits than its factorization.

1220211011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374111545 (or 1374111541 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1220211011112 its reverse (2111101120221), we get a palindrome (3331312131333).

The spelling of 1220211011112 in words is "one trillion, two hundred twenty billion, two hundred eleven million, eleven thousand, one hundred twelve".