13550421224 has 8 divisors (see below), whose sum is σ = 25407039810. Its totient is φ = 6775210608.

The previous prime is 13550421167. The next prime is 13550421259. The reversal of 13550421224 is 42212405531.

It can be written as a sum of positive squares in only one way, i.e., 7126398724 + 6424022500 = 84418^2 + 80150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13550421224² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846901319 + ... + 846901334.

Almost surely, 2^13550421224 is an apocalyptic number.

It is an amenable number.

13550421224 is a deficient number, since it is larger than the sum of its proper divisors (11856618586).

13550421224 is a wasteful number, since it uses less digits than its factorization.

13550421224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693802659 (or 1693802655 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 13550421224 its reverse (42212405531), we get a palindrome (55762826755).

The spelling of 13550421224 in words is "thirteen billion, five hundred fifty million, four hundred twenty-one thousand, two hundred twenty-four".