7197121 has 4 divisors (see below), whose sum is σ = 7207600. Its totient is φ = 7186644.

The previous prime is 7197119. The next prime is 7197131. The reversal of 7197121 is 1217917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7197121 - 2¹ = 7197119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7197121.

It is not an unprimeable number, because it can be changed into a prime (7197101) 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, 4131 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (1801900).

Almost surely, 2^7197121 is an apocalyptic number.

It is an amenable number.

7197121 is a deficient number, since it is larger than the sum of its proper divisors (10479).

7197121 is an equidigital number, since it uses as much as digits as its factorization.

7197121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10478.

The product of its digits is 882, while the sum is 28.

The square root of 7197121 is about 2682.7450493851. The cubic root of 7197121 is about 193.0721360460.

The spelling of 7197121 in words is "seven million, one hundred ninety-seven thousand, one hundred twenty-one".