1012112111208 has 128 divisors (see below), whose sum is σ = 2837819473920. Its totient is φ = 298105032960.

The previous prime is 1012112111207. The next prime is 1012112111221. The reversal of 1012112111208 is 8021112112101.

It is not an unprimeable number, because it can be changed into a prime (1012112111207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9549241 + ... + 9654647.

It is an arithmetic number, because the mean of its divisors is an integer number (22170464640).

Almost surely, 2^{1012112111208} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012112111208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418909736960).

1012112111208 is an abundant number, since it is smaller than the sum of its proper divisors (1825707362712).

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

1012112111208 is a wasteful number, since it uses less digits than its factorization.

1012112111208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106447 (or 106443 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 1012112111208 its reverse (8021112112101), we get a palindrome (9033224223309).

The spelling of 1012112111208 in words is "one trillion, twelve billion, one hundred twelve million, one hundred eleven thousand, two hundred eight".