1010112222221 has 8 divisors (see below), whose sum is σ = 1070395227000. Its totient is φ = 949925288448.

The previous prime is 1010112222199. The next prime is 1010112222239. The reversal of 1010112222221 is 1222222110101.

1010112222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101882256100 + 908229966121 = 319190^2 + 953011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1010112222221 - 2¹⁰ = 1010112221197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1010112222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010112222241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23996096 + ... + 24038153.

It is an arithmetic number, because the mean of its divisors is an integer number (133799403375).

Almost surely, 2^{1010112222221} is an apocalyptic number.

It is an amenable number.

1010112222221 is a deficient number, since it is larger than the sum of its proper divisors (60283004779).

1010112222221 is a wasteful number, since it uses less digits than its factorization.

1010112222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48035503.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1010112222221 its reverse (1222222110101), we get a palindrome (2232334332322).

It can be divided in two parts, 101011 and 2222221, that added together give a palindrome (2323232).

The spelling of 1010112222221 in words is "one trillion, ten billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-one".