1011110221 has 8 divisors (see below), whose sum is σ = 1115424000. Its totient is φ = 908862240.

The previous prime is 1011110179. The next prime is 1011110231. The reversal of 1011110221 is 1220111101.

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

It is a de Polignac number, because none of the positive numbers 2^k-1011110221 is a prime.

It is a super-3 number, since 3×1011110221³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011110198 and 1011110207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011110231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515421 + ... + 517378.

It is an arithmetic number, because the mean of its divisors is an integer number (139428000).

Almost surely, 2^1011110221 is an apocalyptic number.

1011110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011110221 is a deficient number, since it is larger than the sum of its proper divisors (104313779).

1011110221 is a wasteful number, since it uses less digits than its factorization.

1011110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032899.

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

The square root of 1011110221 is about 31797.9593842121. The cubic root of 1011110221 is about 1003.6897758097.

Adding to 1011110221 its reverse (1220111101), we get a palindrome (2231221322).

The spelling of 1011110221 in words is "one billion, eleven million, one hundred ten thousand, two hundred twenty-one".