1011124221 has 16 divisors (see below), whose sum is σ = 1362609600. Its totient is φ = 666880128.

The previous prime is 1011124201. The next prime is 1011124243. The reversal of 1011124221 is 1224211101.

It is not a de Polignac number, because 1011124221 - 2⁶ = 1011124157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011124221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011124201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255385 + ... + 259313.

It is an arithmetic number, because the mean of its divisors is an integer number (85163100).

Almost surely, 2^1011124221 is an apocalyptic number.

It is an amenable number.

1011124221 is a deficient number, since it is larger than the sum of its proper divisors (351485379).

1011124221 is a wasteful number, since it uses less digits than its factorization.

1011124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1011124221 is about 31798.1795233627. The cubic root of 1011124221 is about 1003.6944082068.

Adding to 1011124221 its reverse (1224211101), we get a palindrome (2235335322).

The spelling of 1011124221 in words is "one billion, eleven million, one hundred twenty-four thousand, two hundred twenty-one".