11201022989 has 4 divisors (see below), whose sum is σ = 12062640156. Its totient is φ = 10339405824.

The previous prime is 11201022971. The next prime is 11201023007. The reversal of 11201022989 is 98922010211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98922010211 = 467 ⋅211824433.

It is an interprime number because it is at equal distance from previous prime (11201022971) and next prime (11201023007).

It can be written as a sum of positive squares in 2 ways, for example, as 7042062889 + 4158960100 = 83917^2 + 64490^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201022989 - 2⁸ = 11201022733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201022289) 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, 430808564 + ... + 430808589.

It is an arithmetic number, because the mean of its divisors is an integer number (3015660039).

Almost surely, 2^11201022989 is an apocalyptic number.

It is an amenable number.

11201022989 is a deficient number, since it is larger than the sum of its proper divisors (861617167).

11201022989 is an equidigital number, since it uses as much as digits as its factorization.

11201022989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861617166.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 11201022989 in words is "eleven billion, two hundred one million, twenty-two thousand, nine hundred eighty-nine".