1001120001012 has 96 divisors (see below), whose sum is σ = 2613391289600. Its totient is φ = 331408112256.

The previous prime is 1001120000999. The next prime is 1001120001029. The reversal of 1001120001012 is 2101000211001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1001120000985 and 1001120001003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34796289 + ... + 34825047.

Almost surely, 2^{1001120001012} is an apocalyptic number.

1001120001012 is a gapful number since it is divisible by the number (12) 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 1001120001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306695644800).

1001120001012 is an abundant number, since it is smaller than the sum of its proper divisors (1612271288588).

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

1001120001012 is a wasteful number, since it uses less digits than its factorization.

1001120001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30982 (or 30974 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1001120001012 its reverse (2101000211001), we get a palindrome (3102120212013).

The spelling of 1001120001012 in words is "one trillion, one billion, one hundred twenty million, one thousand, twelve".