11220985692 has 144 divisors (see below), whose sum is σ = 33546240000. Its totient is φ = 3160594080.

The previous prime is 11220985691. The next prime is 11220985703. The reversal of 11220985692 is 29658902211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220985691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 870309 + ... + 883107.

It is an arithmetic number, because the mean of its divisors is an integer number (232960000).

Almost surely, 2^11220985692 is an apocalyptic number.

11220985692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220985692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16773120000).

11220985692 is an abundant number, since it is smaller than the sum of its proper divisors (22325254308).

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

11220985692 is a wasteful number, since it uses less digits than its factorization.

11220985692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901 (or 12882 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11220985692 in words is "eleven billion, two hundred twenty million, nine hundred eighty-five thousand, six hundred ninety-two".