11022999988 has 144 divisors (see below), whose sum is σ = 27576630144. Its totient is φ = 3730821120.

The previous prime is 11022999961. The next prime is 11022999989. The reversal of 11022999988 is 88999922011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022999989) 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 47 ways as a sum of consecutive naturals, for example, 878656 + ... + 891112.

It is an arithmetic number, because the mean of its divisors is an integer number (191504376).

Almost surely, 2^11022999988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11022999988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13788315072).

11022999988 is an abundant number, since it is smaller than the sum of its proper divisors (16553630156).

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

11022999988 is a wasteful number, since it uses less digits than its factorization.

11022999988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12522 (or 12507 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 58.

The spelling of 11022999988 in words is "eleven billion, twenty-two million, nine hundred ninety-nine thousand, nine hundred eighty-eight".