7321514121 has 6 divisors (see below), whose sum is σ = 10575520410. Its totient is φ = 4881009408.

The previous prime is 7321514113. The next prime is 7321514183. The reversal of 7321514121 is 1214151237.

7321514121 is a `hidden beast` number, since 7 + 3 + 21 + 514 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5861433600 + 1460080521 = 76560^2 + 38211^2 .

It is not a de Polignac number, because 7321514121 - 2³ = 7321514113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7321514111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406750776 + ... + 406750793.

It is an arithmetic number, because the mean of its divisors is an integer number (1762586735).

Almost surely, 2^7321514121 is an apocalyptic number.

It is an amenable number.

7321514121 is a deficient number, since it is larger than the sum of its proper divisors (3254006289).

7321514121 is a wasteful number, since it uses less digits than its factorization.

7321514121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813501575 (or 813501572 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 7321514121 is about 85565.8466971490. The cubic root of 7321514121 is about 1941.7812422073.

Adding to 7321514121 its reverse (1214151237), we get a palindrome (8535665358).

The spelling of 7321514121 in words is "seven billion, three hundred twenty-one million, five hundred fourteen thousand, one hundred twenty-one".