22133213550 has 240 divisors, whose sum is σ = 70515799200. Its totient is φ = 5042269440.

The previous prime is 22133213549. The next prime is 22133213573. The reversal of 22133213550 is 5531233122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 9893032 + ... + 9895268.

It is an arithmetic number, because the mean of its divisors is an integer number (293815830).

Almost surely, 2^22133213550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22133213550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35257899600).

22133213550 is an abundant number, since it is smaller than the sum of its proper divisors (48382585650).

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

22133213550 is a wasteful number, since it uses less digits than its factorization.

22133213550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617 (or 2603 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 22133213550 its reverse (5531233122), we get a palindrome (27664446672).

The spelling of 22133213550 in words is "twenty-two billion, one hundred thirty-three million, two hundred thirteen thousand, five hundred fifty".