10101020112 has 120 divisors (see below), whose sum is σ = 29646227520. Its totient is φ = 3329061120.

The previous prime is 10101020093. The next prime is 10101020113. The reversal of 10101020112 is 21102010101.

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 = 10101020094 and 10101020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101020113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331437 + ... + 360627.

It is an arithmetic number, because the mean of its divisors is an integer number (247051896).

Almost surely, 2^10101020112 is an apocalyptic number.

10101020112 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 10101020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14823113760).

10101020112 is an abundant number, since it is smaller than the sum of its proper divisors (19545207408).

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

10101020112 is an equidigital number, since it uses as much as digits as its factorization.

10101020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29303 (or 29285 counting only the distinct ones).

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

Adding to 10101020112 its reverse (21102010101), we get a palindrome (31203030213).

The spelling of 10101020112 in words is "ten billion, one hundred one million, twenty thousand, one hundred twelve".