7513221011 has 16 divisors (see below), whose sum is σ = 7815852000. Its totient is φ = 7217553408.

The previous prime is 7513221007. The next prime is 7513221019. The reversal of 7513221011 is 1101223157.

It is a cyclic number.

It is not a de Polignac number, because 7513221011 - 2² = 7513221007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7513221019) 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, 798965 + ... + 808313.

It is an arithmetic number, because the mean of its divisors is an integer number (488490750).

Almost surely, 2^7513221011 is an apocalyptic number.

7513221011 is a deficient number, since it is larger than the sum of its proper divisors (302630989).

7513221011 is a wasteful number, since it uses less digits than its factorization.

7513221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9718.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 7513221011 is about 86678.8383113203. The cubic root of 7513221011 is about 1958.5833344638.

Adding to 7513221011 its reverse (1101223157), we get a palindrome (8614444168).

The spelling of 7513221011 in words is "seven billion, five hundred thirteen million, two hundred twenty-one thousand, eleven".