1011221110 has 32 divisors (see below), whose sum is σ = 1866252960. Its totient is φ = 394291968.

The previous prime is 1011221083. The next prime is 1011221111. The reversal of 1011221110 is 111221101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011221111) 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 15 ways as a sum of consecutive naturals, for example, 242604 + ... + 246736.

It is an arithmetic number, because the mean of its divisors is an integer number (58320405).

Almost surely, 2^1011221110 is an apocalyptic number.

1011221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011221110 is a deficient number, since it is larger than the sum of its proper divisors (855031850).

1011221110 is a wasteful number, since it uses less digits than its factorization.

1011221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752.

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

The square root of 1011221110 is about 31799.7029860343. The cubic root of 1011221110 is about 1003.7264662004.

Adding to 1011221110 its reverse (111221101), we get a palindrome (1122442211).

Subtracting from 1011221110 its reverse (111221101), we obtain a palindrome (900000009).

The spelling of 1011221110 in words is "one billion, eleven million, two hundred twenty-one thousand, one hundred ten".