11229612789 has 4 divisors (see below), whose sum is σ = 14972817056. Its totient is φ = 7486408524.

The previous prime is 11229612781. The next prime is 11229612817. The reversal of 11229612789 is 98721692211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11229612789 - 2³ = 11229612781 is a prime.

It is a super-2 number, since 2×11229612789² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11229612781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871602129 + ... + 1871602134.

It is an arithmetic number, because the mean of its divisors is an integer number (3743204264).

Almost surely, 2^11229612789 is an apocalyptic number.

It is an amenable number.

11229612789 is a deficient number, since it is larger than the sum of its proper divisors (3743204267).

11229612789 is an equidigital number, since it uses as much as digits as its factorization.

11229612789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743204266.

The product of its digits is 217728, while the sum is 48.

It can be divided in two parts, 1122961 and 2789, that added together give a triangular number (1125750 = T₁₅₀₀).

The spelling of 11229612789 in words is "eleven billion, two hundred twenty-nine million, six hundred twelve thousand, seven hundred eighty-nine".