1111010221 has 16 divisors (see below), whose sum is σ = 1169790336. Its totient is φ = 1054138176.

The previous prime is 1111010207. The next prime is 1111010227. The reversal of 1111010221 is 1220101111.

It is a cyclic number.

It is not a de Polignac number, because 1111010221 - 2⁵ = 1111010189 is a prime.

It is a super-2 number, since 2×1111010221² = 2468687422332937682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111010198 and 1111010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111010227) 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, 232371 + ... + 237103.

It is an arithmetic number, because the mean of its divisors is an integer number (73111896).

Almost surely, 2^1111010221 is an apocalyptic number.

It is an amenable number.

1111010221 is a deficient number, since it is larger than the sum of its proper divisors (58780115).

1111010221 is a wasteful number, since it uses less digits than its factorization.

1111010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1111010221 is about 33331.8199473116. The cubic root of 1111010221 is about 1035.7128187991.

Adding to 1111010221 its reverse (1220101111), we get a palindrome (2331111332).

The spelling of 1111010221 in words is "one billion, one hundred eleven million, ten thousand, two hundred twenty-one".