1111221010 has 8 divisors (see below), whose sum is σ = 2000197836. Its totient is φ = 444488400.

The previous prime is 1111220987. The next prime is 1111221017. The reversal of 1111221010 is 101221111.

It can be written as a sum of positive squares in 2 ways, for example, as 1055405169 + 55815841 = 32487^2 + 7471^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 111122101 = 1111221010 / (1 + 1 + 1 + 1 + 2 + 2 + 1 + 0 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (1111221017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55561041 + ... + 55561060.

Almost surely, 2^1111221010 is an apocalyptic number.

1111221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111221010 is a deficient number, since it is larger than the sum of its proper divisors (888976826).

1111221010 is a wasteful number, since it uses less digits than its factorization.

1111221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111122108.

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

The square root of 1111221010 is about 33334.9817759062. The cubic root of 1111221010 is about 1035.7783156655.

Adding to 1111221010 its reverse (101221111), we get a palindrome (1212442121).

The spelling of 1111221010 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, ten".