7221518941 has 32 divisors (see below), whose sum is σ = 9041677568. Its totient is φ = 5615516160.

The previous prime is 7221518891. The next prime is 7221518951. The reversal of 7221518941 is 1498151227.

It is a cyclic number.

It is not a de Polignac number, because 7221518941 - 2⁷ = 7221518813 is a prime.

It is a super-2 number, since 2×7221518941² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7221518894 and 7221518903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221518951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2037631 + ... + 2041171.

It is an arithmetic number, because the mean of its divisors is an integer number (282552424).

Almost surely, 2^7221518941 is an apocalyptic number.

It is an amenable number.

7221518941 is a deficient number, since it is larger than the sum of its proper divisors (1820158627).

7221518941 is a wasteful number, since it uses less digits than its factorization.

7221518941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941.

The product of its digits is 40320, while the sum is 40.

The square root of 7221518941 is about 84979.5207152876. The cubic root of 7221518941 is about 1932.9005881985.

The spelling of 7221518941 in words is "seven billion, two hundred twenty-one million, five hundred eighteen thousand, nine hundred forty-one".