10121221100012 has 36 divisors (see below), whose sum is σ = 19921473284328. Its totient is φ = 4493565384000.

The previous prime is 10121221100009. The next prime is 10121221100027. The reversal of 10121221100012 is 21000112212101.

10121221100012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 10121221100012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243137489 + ... + 243179112.

It is an arithmetic number, because the mean of its divisors is an integer number (553374257898).

Almost surely, 2^{10121221100012} is an apocalyptic number.

It is an amenable number.

10121221100012 is a deficient number, since it is larger than the sum of its proper divisors (9800252184316).

10121221100012 is a wasteful number, since it uses less digits than its factorization.

10121221100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486316670 (or 486316657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10121221100012 its reverse (21000112212101), we get a palindrome (31121333312113).

The spelling of 10121221100012 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thousand, twelve".