7113001311221 has 4 divisors (see below), whose sum is σ = 7660155258252. Its totient is φ = 6565847364192.

The previous prime is 7113001311211. The next prime is 7113001311233. The reversal of 7113001311221 is 1221131003117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2162870248900 + 4950131062321 = 1470670^2 + 2224889^2 .

It is a cyclic number.

It is not a de Polignac number, because 7113001311221 - 2²² = 7112997116917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7113001311211) 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, 273576973496 + ... + 273576973521.

It is an arithmetic number, because the mean of its divisors is an integer number (1915038814563).

Almost surely, 2^{7113001311221} is an apocalyptic number.

It is an amenable number.

7113001311221 is a deficient number, since it is larger than the sum of its proper divisors (547153947031).

7113001311221 is a wasteful number, since it uses less digits than its factorization.

7113001311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547153947030.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 7113001311221 its reverse (1221131003117), we get a palindrome (8334132314338).

The spelling of 7113001311221 in words is "seven trillion, one hundred thirteen billion, one million, three hundred eleven thousand, two hundred twenty-one".