103121120321212 has 24 divisors (see below), whose sum is σ = 206780732153856. Its totient is φ = 44079374813808.

The previous prime is 103121120321209. The next prime is 103121120321239. The reversal of 103121120321212 is 212123021121301.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4807949008 + ... + 4807970455.

It is an arithmetic number, because the mean of its divisors is an integer number (8615863839744).

Almost surely, 2^{103121120321212} is an apocalyptic number.

It is an amenable number.

103121120321212 is an abundant number, since it is smaller than the sum of its proper divisors (103659611832644).

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

103121120321212 is a wasteful number, since it uses less digits than its factorization.

103121120321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9615919857 (or 9615919855 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 103121120321212 its reverse (212123021121301), we get a palindrome (315244141442513).

The spelling of 103121120321212 in words is "one hundred three trillion, one hundred twenty-one billion, one hundred twenty million, three hundred twenty-one thousand, two hundred twelve".