1001111010012 has 48 divisors (see below), whose sum is σ = 2610475771680. Its totient is φ = 331774740864.

The previous prime is 1001111009981. The next prime is 1001111010013. The reversal of 1001111010012 is 2100101111001.

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 = 1001111009976 and 1001111010003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001111010013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26771913 + ... + 26809280.

It is an arithmetic number, because the mean of its divisors is an integer number (54384911910).

Almost surely, 2^{1001111010012} is an apocalyptic number.

1001111010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001111010012 is an abundant number, since it is smaller than the sum of its proper divisors (1609364761668).

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

1001111010012 is a wasteful number, since it uses less digits than its factorization.

1001111010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53581379 (or 53581371 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1001111010012 its reverse (2100101111001), we get a palindrome (3101212121013).

The spelling of 1001111010012 in words is "one trillion, one billion, one hundred eleven million, ten thousand, twelve".