103121101212 has 24 divisors (see below), whose sum is σ = 240648097536. Its totient is φ = 34369101168.

The previous prime is 103121101211. The next prime is 103121101231. The reversal of 103121101212 is 212101121301.

103121101212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 103121101191 and 103121101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103121101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480868 + ... + 661419.

It is an arithmetic number, because the mean of its divisors is an integer number (10027004064).

Almost surely, 2^103121101212 is an apocalyptic number.

103121101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

103121101212 is an abundant number, since it is smaller than the sum of its proper divisors (137526996324).

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

103121101212 is a wasteful number, since it uses less digits than its factorization.

103121101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149817 (or 1149815 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 103121101212 its reverse (212101121301), we get a palindrome (315222222513).

The spelling of 103121101212 in words is "one hundred three billion, one hundred twenty-one million, one hundred one thousand, two hundred twelve".