1020112200109 has 6 divisors (see below), whose sum is σ = 1026651140394. Its totient is φ = 1013614645680.

The previous prime is 1020112200089. The next prime is 1020112200179. The reversal of 1020112200109 is 9010022110201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 23066015625 + 997046184484 = 151875^2 + 998522^2 .

It is not a de Polignac number, because 1020112200109 - 2⁹ = 1020112199597 is a prime.

It is a super-2 number, since 2×1020112200109² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020112200179) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20668122 + ... + 20717419.

It is an arithmetic number, because the mean of its divisors is an integer number (171108523399).

Almost surely, 2^{1020112200109} is an apocalyptic number.

It is an amenable number.

1020112200109 is a deficient number, since it is larger than the sum of its proper divisors (6538940285).

1020112200109 is an frugal number, since it uses more digits than its factorization.

1020112200109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41385855 (or 41385698 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

It can be divided in two parts, 1020112 and 200109, that added together give a palindrome (1220221).

The spelling of 1020112200109 in words is "one trillion, twenty billion, one hundred twelve million, two hundred thousand, one hundred nine".