7121197 has 4 divisors (see below), whose sum is σ = 7126560. Its totient is φ = 7115836.

The previous prime is 7121173. The next prime is 7121203. The reversal of 7121197 is 7911217.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7121197 - 2¹¹ = 7119149 is a prime.

It is a super-2 number, since 2×7121197² = 101422893425618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121137) 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, 954 + ... + 3892.

It is an arithmetic number, because the mean of its divisors is an integer number (1781640).

Almost surely, 2^7121197 is an apocalyptic number.

It is an amenable number.

7121197 is a deficient number, since it is larger than the sum of its proper divisors (5363).

7121197 is a wasteful number, since it uses less digits than its factorization.

7121197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362.

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

The square root of 7121197 is about 2668.5571007569. The cubic root of 7121197 is about 192.3908145649.

The spelling of 7121197 in words is "seven million, one hundred twenty-one thousand, one hundred ninety-seven".