1001020109112 has 40 divisors (see below), whose sum is σ = 2803783177800. Its totient is φ = 333673369488.

The previous prime is 1001020109101. The next prime is 1001020109129. The reversal of 1001020109112 is 2119010201001.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 772391412 + ... + 772392707.

It is an arithmetic number, because the mean of its divisors is an integer number (70094579445).

Almost surely, 2^{1001020109112} is an apocalyptic number.

1001020109112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001020109112 is an abundant number, since it is smaller than the sum of its proper divisors (1802763068688).

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

1001020109112 is a wasteful number, since it uses less digits than its factorization.

1001020109112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544784137 (or 1544784124 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 1001020109112 in words is "one trillion, one billion, twenty million, one hundred nine thousand, one hundred twelve".