1220112010012 has 48 divisors (see below), whose sum is σ = 2468005908480. Its totient is φ = 516953619072.

The previous prime is 1220112010009. The next prime is 1220112010021. The reversal of 1220112010012 is 2100102110221.

It is a junction number, because it is equal to n+sod(n) for n = 1220112009974 and 1220112010001.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 18864553 + ... + 18929119.

It is an arithmetic number, because the mean of its divisors is an integer number (51416789760).

Almost surely, 2^{1220112010012} is an apocalyptic number.

It is an amenable number.

1220112010012 is an abundant number, since it is smaller than the sum of its proper divisors (1247893898468).

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

1220112010012 is a wasteful number, since it uses less digits than its factorization.

1220112010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72250 (or 72248 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220112010012 its reverse (2100102110221), we get a palindrome (3320214120233).

The spelling of 1220112010012 in words is "one trillion, two hundred twenty billion, one hundred twelve million, ten thousand, twelve".