7121201 has 4 divisors (see below), whose sum is σ = 7238004. Its totient is φ = 7004400.

The previous prime is 7121173. The next prime is 7121203. The reversal of 7121201 is 1021217.

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 1123600 + 5997601 = 1060^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 7121201 - 2⁶ = 7121137 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58310 + ... + 58431.

It is an arithmetic number, because the mean of its divisors is an integer number (1809501).

Almost surely, 2^7121201 is an apocalyptic number.

It is an amenable number.

7121201 is a deficient number, since it is larger than the sum of its proper divisors (116803).

7121201 is a wasteful number, since it uses less digits than its factorization.

7121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116802.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 7121201 is about 2668.5578502255. The cubic root of 7121201 is about 192.3908505871.

Adding to 7121201 its reverse (1021217), we get a palindrome (8142418).

The spelling of 7121201 in words is "seven million, one hundred twenty-one thousand, two hundred one".