12103021121012 has 6 divisors (see below), whose sum is σ = 21180286961778. Its totient is φ = 6051510560504.

The previous prime is 12103021120907. The next prime is 12103021121063. The reversal of 12103021121012 is 21012112030121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12035376393616 + 67644727396 = 3469204^2 + 260086^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1512877640123 + ... + 1512877640130.

It is an arithmetic number, because the mean of its divisors is an integer number (3530047826963).

Almost surely, 2^{12103021121012} is an apocalyptic number.

It is an amenable number.

12103021121012 is a deficient number, since it is larger than the sum of its proper divisors (9077265840766).

12103021121012 is a wasteful number, since it uses less digits than its factorization.

12103021121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025755280257 (or 3025755280255 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12103021121012 its reverse (21012112030121), we get a palindrome (33115133151133).

The spelling of 12103021121012 in words is "twelve trillion, one hundred three billion, twenty-one million, one hundred twenty-one thousand, twelve".