1012103112 has 16 divisors (see below), whose sum is σ = 2530257840. Its totient is φ = 337367696.

The previous prime is 1012103101. The next prime is 1012103119. The reversal of 1012103112 is 2113012101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1012103119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21085458 + ... + 21085505.

It is an arithmetic number, because the mean of its divisors is an integer number (158141115).

Almost surely, 2^1012103112 is an apocalyptic number.

1012103112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012103112 is an abundant number, since it is smaller than the sum of its proper divisors (1518154728).

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

1012103112 is a wasteful number, since it uses less digits than its factorization.

1012103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42170972 (or 42170968 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1012103112 is about 31813.5680488687. The cubic root of 1012103112 is about 1004.0182030847.

Adding to 1012103112 its reverse (2113012101), we get a palindrome (3125115213).

The spelling of 1012103112 in words is "one billion, twelve million, one hundred three thousand, one hundred twelve".