22003212550 has 96 divisors (see below), whose sum is σ = 46168473600. Its totient is φ = 7729344000.

The previous prime is 22003212547. The next prime is 22003212559. The reversal of 22003212550 is 5521230022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003212559) 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, 17202811 + ... + 17204089.

It is an arithmetic number, because the mean of its divisors is an integer number (480921600).

Almost surely, 2^22003212550 is an apocalyptic number.

22003212550 is an abundant number, since it is smaller than the sum of its proper divisors (24165261050).

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

22003212550 is a wasteful number, since it uses less digits than its factorization.

22003212550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 22003212550 its reverse (5521230022), we get a palindrome (27524442572).

The spelling of 22003212550 in words is "twenty-two billion, three million, two hundred twelve thousand, five hundred fifty".