1001722215 has 16 divisors (see below), whose sum is σ = 1726044768. Its totient is φ = 493155456.

The previous prime is 1001722213. The next prime is 1001722223. The reversal of 1001722215 is 5122271001.

It is not a de Polignac number, because 1001722215 - 2¹ = 1001722213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001722191 and 1001722200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001722213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2568324 + ... + 2568713.

It is an arithmetic number, because the mean of its divisors is an integer number (107877798).

Almost surely, 2^1001722215 is an apocalyptic number.

1001722215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001722215 is a deficient number, since it is larger than the sum of its proper divisors (724322553).

1001722215 is a wasteful number, since it uses less digits than its factorization.

1001722215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5137058.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 1001722215 is about 31649.9954976300. The cubic root of 1001722215 is about 1000.5737424233.

Adding to 1001722215 its reverse (5122271001), we get a palindrome (6123993216).

The spelling of 1001722215 in words is "one billion, one million, seven hundred twenty-two thousand, two hundred fifteen".