22011323202 has 72 divisors (see below), whose sum is σ = 52568792640. Its totient is φ = 6651282000.

The previous prime is 22011323179. The next prime is 22011323231. The reversal of 22011323202 is 20232311022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 767827 + ... + 795977.

It is an arithmetic number, because the mean of its divisors is an integer number (730122120).

Almost surely, 2^22011323202 is an apocalyptic number.

22011323202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22011323202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26284396320).

22011323202 is an abundant number, since it is smaller than the sum of its proper divisors (30557469438).

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

22011323202 is a wasteful number, since it uses less digits than its factorization.

22011323202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28540 (or 28526 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22011323202 its reverse (20232311022), we get a palindrome (42243634224).

The spelling of 22011323202 in words is "twenty-two billion, eleven million, three hundred twenty-three thousand, two hundred two".