1010111100221 has 32 divisors (see below), whose sum is σ = 1114881408000. Its totient is φ = 910893634560.

The previous prime is 1010111100199. The next prime is 1010111100253. The reversal of 1010111100221 is 1220011110101.

It is a cyclic number.

It is not a de Polignac number, because 1010111100221 - 2¹⁴ = 1010111083837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010111100281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86012276 + ... + 86024018.

It is an arithmetic number, because the mean of its divisors is an integer number (34840044000).

Almost surely, 2^{1010111100221} is an apocalyptic number.

It is an amenable number.

1010111100221 is a deficient number, since it is larger than the sum of its proper divisors (104770307779).

1010111100221 is a wasteful number, since it uses less digits than its factorization.

1010111100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1010111100221 its reverse (1220011110101), we get a palindrome (2230122210322).

The spelling of 1010111100221 in words is "one trillion, ten billion, one hundred eleven million, one hundred thousand, two hundred twenty-one".