5503121211 has 16 divisors (see below), whose sum is σ = 8418345984. Its totient is φ = 3132401664.

The previous prime is 5503121207. The next prime is 5503121227. The reversal of 5503121211 is 1121213055.

It is not a de Polignac number, because 5503121211 - 2² = 5503121207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (5503121251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504435 + ... + 515228.

It is an arithmetic number, because the mean of its divisors is an integer number (526146624).

Almost surely, 2^5503121211 is an apocalyptic number.

5503121211 is a deficient number, since it is larger than the sum of its proper divisors (2915224773).

5503121211 is a wasteful number, since it uses less digits than its factorization.

5503121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019930.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 5503121211 is about 74183.0250866059. The cubic root of 5503121211 is about 1765.5080124606.

Adding to 5503121211 its reverse (1121213055), we get a palindrome (6624334266).

The spelling of 5503121211 in words is "five billion, five hundred three million, one hundred twenty-one thousand, two hundred eleven".