1011112210221 has 16 divisors (see below), whose sum is σ = 1416785772864. Its totient is φ = 640604087424.

The previous prime is 1011112210187. The next prime is 1011112210237. The reversal of 1011112210221 is 1220122111101.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1011112210221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011112210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011112210271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105915216 + ... + 105924761.

It is an arithmetic number, because the mean of its divisors is an integer number (88549110804).

Almost surely, 2^{1011112210221} is an apocalyptic number.

It is an amenable number.

1011112210221 is a deficient number, since it is larger than the sum of its proper divisors (405673562643).

1011112210221 is a wasteful number, since it uses less digits than its factorization.

1011112210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211840060.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1011112210221 its reverse (1220122111101), we get a palindrome (2231234321322).

The spelling of 1011112210221 in words is "one trillion, eleven billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".