7221000101 has 6 divisors (see below), whose sum is σ = 8399938950. Its totient is φ = 6189428616.

The previous prime is 7221000079. The next prime is 7221000133. The reversal of 7221000101 is 1010001227.

It can be written as a sum of positive squares in only one way, i.e., 5033193025 + 2187807076 = 70945^2 + 46774^2 .

It is not a de Polignac number, because 7221000101 - 2⁶ = 7221000037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221000001) 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, 73683626 + ... + 73683723.

It is an arithmetic number, because the mean of its divisors is an integer number (1399989825).

Almost surely, 2^7221000101 is an apocalyptic number.

It is an amenable number.

7221000101 is a deficient number, since it is larger than the sum of its proper divisors (1178938849).

7221000101 is a wasteful number, since it uses less digits than its factorization.

7221000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147367363 (or 147367356 counting only the distinct ones).

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

The square root of 7221000101 is about 84976.4679249497. The cubic root of 7221000101 is about 1932.8542964526.

Adding to 7221000101 its reverse (1010001227), we get a palindrome (8231001328).

The spelling of 7221000101 in words is "seven billion, two hundred twenty-one million, one hundred one", and thus it is an aban number.