1012110201221 has 24 divisors (see below), whose sum is σ = 1242349200000. Its totient is φ = 819854167104.

The previous prime is 1012110201217. The next prime is 1012110201227. The reversal of 1012110201221 is 1221020112101.

It is not a de Polignac number, because 1012110201221 - 2² = 1012110201217 is a prime.

It is a super-2 number, since 2×1012110201221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012110201196 and 1012110201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012110201227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 948221 + ... + 1709778.

It is an arithmetic number, because the mean of its divisors is an integer number (51764550000).

Almost surely, 2^{1012110201221} is an apocalyptic number.

It is an amenable number.

1012110201221 is a deficient number, since it is larger than the sum of its proper divisors (230238998779).

1012110201221 is a wasteful number, since it uses less digits than its factorization.

1012110201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658441 (or 2658434 counting only the distinct ones).

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

Adding to 1012110201221 its reverse (1221020112101), we get a palindrome (2233130313322).

The spelling of 1012110201221 in words is "one trillion, twelve billion, one hundred ten million, two hundred one thousand, two hundred twenty-one".