1111221443010 has 128 divisors (see below), whose sum is σ = 3060084178944. Its totient is φ = 252981792000.

The previous prime is 1111221442979. The next prime is 1111221443011. The reversal of 1111221443010 is 103441221111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1111221443011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60876385 + ... + 60894635.

It is an arithmetic number, because the mean of its divisors is an integer number (23906907648).

Almost surely, 2^{1111221443010} is an apocalyptic number.

1111221443010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111221443010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530042089472).

1111221443010 is an abundant number, since it is smaller than the sum of its proper divisors (1948862735934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111221443010 is a wasteful number, since it uses less digits than its factorization.

1111221443010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1111221443010 its reverse (103441221111), we get a palindrome (1214662664121).

The spelling of 1111221443010 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, four hundred forty-three thousand, ten".