7115203221 has 48 divisors (see below), whose sum is σ = 11229299136. Its totient is φ = 3994873344.

The previous prime is 7115203217. The next prime is 7115203231. The reversal of 7115203221 is 1223025117.

It is not a de Polignac number, because 7115203221 - 2² = 7115203217 is a prime.

It is a super-2 number, since 2×7115203221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7115203191 and 7115203200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7115203231) 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, 5485245 + ... + 5486541.

It is an arithmetic number, because the mean of its divisors is an integer number (233943732).

Almost surely, 2^7115203221 is an apocalyptic number.

It is an amenable number.

7115203221 is a deficient number, since it is larger than the sum of its proper divisors (4114095915).

7115203221 is a wasteful number, since it uses less digits than its factorization.

7115203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 7115203221 is about 84351.6640084830. The cubic root of 7115203221 is about 1923.3682215773.

Adding to 7115203221 its reverse (1223025117), we get a palindrome (8338228338).

The spelling of 7115203221 in words is "seven billion, one hundred fifteen million, two hundred three thousand, two hundred twenty-one".