10121221000012 has 12 divisors (see below), whose sum is σ = 17723952729000. Its totient is φ = 5057234506016.

The previous prime is 10121221000003. The next prime is 10121221000049. The reversal of 10121221000012 is 21000012212101.

It is a super-2 number, since 2×10121221000012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10121220999956 and 10121221000001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843991753 + ... + 844003744.

It is an arithmetic number, because the mean of its divisors is an integer number (1476996060750).

Almost surely, 2^{10121221000012} is an apocalyptic number.

It is an amenable number.

10121221000012 is a deficient number, since it is larger than the sum of its proper divisors (7602731728988).

10121221000012 is a wasteful number, since it uses less digits than its factorization.

10121221000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687997000 (or 1687996998 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10121221000012 its reverse (21000012212101), we get a palindrome (31121233212113).

The spelling of 10121221000012 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, twelve", and thus it is an aban number.