11110201021 has 4 divisors (see below), whose sum is σ = 11138186812. Its totient is φ = 11082215232.

The previous prime is 11110201013. The next prime is 11110201051. The reversal of 11110201021 is 12010201111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5347265625 + 5762935396 = 73125^2 + 75914^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110201021 - 2³ = 11110201013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110200989 and 11110201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110201001) 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, 13992300 + ... + 13993093.

It is an arithmetic number, because the mean of its divisors is an integer number (2784546703).

Almost surely, 2^11110201021 is an apocalyptic number.

It is an amenable number.

11110201021 is a deficient number, since it is larger than the sum of its proper divisors (27985791).

11110201021 is an equidigital number, since it uses as much as digits as its factorization.

11110201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27985790.

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

Adding to 11110201021 its reverse (12010201111), we get a palindrome (23120402132).

The spelling of 11110201021 in words is "eleven billion, one hundred ten million, two hundred one thousand, twenty-one".