11110220001 has 12 divisors (see below), whose sum is σ = 16992101412. Its totient is φ = 6971118336.

The previous prime is 11110219951. The next prime is 11110220021. The reversal of 11110220001 is 10002201111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5718989376 + 5391230625 = 75624^2 + 73425^2 .

It is not a de Polignac number, because 11110220001 - 2¹⁷ = 11110088929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11110220021) 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 11 ways as a sum of consecutive naturals, for example, 36307756 + ... + 36308061.

It is an arithmetic number, because the mean of its divisors is an integer number (1416008451).

Almost surely, 2^11110220001 is an apocalyptic number.

It is an amenable number.

11110220001 is a deficient number, since it is larger than the sum of its proper divisors (5881881411).

11110220001 is a wasteful number, since it uses less digits than its factorization.

11110220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72615840 (or 72615837 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11110220001 its reverse (10002201111), we get a palindrome (21112421112).

The spelling of 11110220001 in words is "eleven billion, one hundred ten million, two hundred twenty thousand, one".