7221035121 has 8 divisors (see below), whose sum is σ = 9631216800. Its totient is φ = 4812438432.

The previous prime is 7221035113. The next prime is 7221035131. The reversal of 7221035121 is 1215301227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7221035121 - 2³ = 7221035113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7221035091 and 7221035100.

It is not an unprimeable number, because it can be changed into a prime (7221035131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385575 + ... + 403868.

It is an arithmetic number, because the mean of its divisors is an integer number (1203902100).

Almost surely, 2^7221035121 is an apocalyptic number.

It is an amenable number.

7221035121 is a deficient number, since it is larger than the sum of its proper divisors (2410181679).

7221035121 is a wasteful number, since it uses less digits than its factorization.

7221035121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792495.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 7221035121 is about 84976.6739817463. The cubic root of 7221035121 is about 1932.8574210635.

Adding to 7221035121 its reverse (1215301227), we get a palindrome (8436336348).

The spelling of 7221035121 in words is "seven billion, two hundred twenty-one million, thirty-five thousand, one hundred twenty-one".