6713223998121 has 27 divisors (see below), whose sum is σ = 9832363779927. Its totient is φ = 4413801581280.

The previous prime is 6713223998101. The next prime is 6713223998123. The reversal of 6713223998121 is 1218993223176.

The square root of 6713223998121 is 2590989.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3810752973225 + 2902471024896 = 1952115^2 + 1703664^2 .

It is not a de Polignac number, because 6713223998121 - 2⁹ = 6713223997609 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6713223998123) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 567420676 + ... + 567432506.

Almost surely, 2^{6713223998121} is an apocalyptic number.

6713223998121 is the 2590989-th square number.

6713223998121 is the 1295495-th centered octagonal number.

It is an amenable number.

6713223998121 is a deficient number, since it is larger than the sum of its proper divisors (3119139781806).

6713223998121 is an frugal number, since it uses more digits than its factorization.

6713223998121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23814 (or 11907 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 6713223998121 in words is "six trillion, seven hundred thirteen billion, two hundred twenty-three million, nine hundred ninety-eight thousand, one hundred twenty-one".