103112021012 has 96 divisors (see below), whose sum is σ = 242372922624. Its totient is φ = 37068595200.

The previous prime is 103112021009. The next prime is 103112021137. The reversal of 103112021012 is 210120211301.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18948212 + ... + 18953652.

It is an arithmetic number, because the mean of its divisors is an integer number (2524717944).

Almost surely, 2^103112021012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103112021012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121186461312).

103112021012 is an abundant number, since it is smaller than the sum of its proper divisors (139260901612).

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

103112021012 is a wasteful number, since it uses less digits than its factorization.

103112021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10209 (or 10207 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 103112021012 its reverse (210120211301), we get a palindrome (313232232313).

The spelling of 103112021012 in words is "one hundred three billion, one hundred twelve million, twenty-one thousand, twelve".