1012020011208 has 96 divisors (see below), whose sum is σ = 2803497091200. Its totient is φ = 329656228224.

The previous prime is 1012020011183. The next prime is 1012020011213. The reversal of 1012020011208 is 8021100202101.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 1980763 + ... + 2438741.

It is an arithmetic number, because the mean of its divisors is an integer number (29203094700).

Almost surely, 2^{1012020011208} is an apocalyptic number.

1012020011208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012020011208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401748545600).

1012020011208 is an abundant number, since it is smaller than the sum of its proper divisors (1791477079992).

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

1012020011208 is a wasteful number, since it uses less digits than its factorization.

1012020011208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458691 (or 458684 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1012020011208 its reverse (8021100202101), we get a palindrome (9033120213309).

The spelling of 1012020011208 in words is "one trillion, twelve billion, twenty million, eleven thousand, two hundred eight".