5511021223 has 4 divisors (see below), whose sum is σ = 5835198960. Its totient is φ = 5186843488.

The previous prime is 5511021199. The next prime is 5511021239. The reversal of 5511021223 is 3221201155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221201155 = 5 ⋅644240231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5511021223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5511021194 and 5511021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511021253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162088843 + ... + 162088876.

It is an arithmetic number, because the mean of its divisors is an integer number (1458799740).

Almost surely, 2^5511021223 is an apocalyptic number.

5511021223 is a deficient number, since it is larger than the sum of its proper divisors (324177737).

5511021223 is a wasteful number, since it uses less digits than its factorization.

5511021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324177736.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 5511021223 is about 74236.2527542979. The cubic root of 5511021223 is about 1766.3524342069.

Adding to 5511021223 its reverse (3221201155), we get a palindrome (8732222378).

The spelling of 5511021223 in words is "five billion, five hundred eleven million, twenty-one thousand, two hundred twenty-three".