11203422550 has 24 divisors (see below), whose sum is σ = 20841300000. Its totient is φ = 4480738080.

The previous prime is 11203422491. The next prime is 11203422551. The reversal of 11203422550 is 5522430211.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203422551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529576 + ... + 550324.

It is an arithmetic number, because the mean of its divisors is an integer number (868387500).

Almost surely, 2^11203422550 is an apocalyptic number.

11203422550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11203422550 is a deficient number, since it is larger than the sum of its proper divisors (9637877450).

11203422550 is a wasteful number, since it uses less digits than its factorization.

11203422550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31560 (or 31555 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 11203422550 its reverse (5522430211), we get a palindrome (16725852761).

The spelling of 11203422550 in words is "eleven billion, two hundred three million, four hundred twenty-two thousand, five hundred fifty".