7220101 has 12 divisors (see below), whose sum is σ = 8690220. Its totient is φ = 5974080.

The previous prime is 7220089. The next prime is 7220107. The reversal of 7220101 is 1010227.

It can be written as a sum of positive squares in 2 ways, for example, as 2265025 + 4955076 = 1505^2 + 2226^2 .

It is not a de Polignac number, because 7220101 - 2⁷ = 7219973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1120 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (724185).

Almost surely, 2^7220101 is an apocalyptic number.

It is an amenable number.

7220101 is a deficient number, since it is larger than the sum of its proper divisors (1470119).

7220101 is a wasteful number, since it uses less digits than its factorization.

7220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124 (or 5117 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 7220101 is about 2687.0245625971. The cubic root of 7220101 is about 193.2774071953.

Adding to 7220101 its reverse (1010227), we get a palindrome (8230328).

The spelling of 7220101 in words is "seven million, two hundred twenty thousand, one hundred one".