7201021001 has 16 divisors (see below), whose sum is σ = 7570195200. Its totient is φ = 6840321600.

The previous prime is 7201020971. The next prime is 7201021039. The reversal of 7201021001 is 1001201027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7201021001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7201021081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1044596 + ... + 1051466.

It is an arithmetic number, because the mean of its divisors is an integer number (473137200).

Almost surely, 2^7201021001 is an apocalyptic number.

7201021001 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7201021001 is a deficient number, since it is larger than the sum of its proper divisors (369174199).

7201021001 is a wasteful number, since it uses less digits than its factorization.

7201021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480.

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

The square root of 7201021001 is about 84858.8298352034. The cubic root of 7201021001 is about 1931.0700394923.

Adding to 7201021001 its reverse (1001201027), we get a palindrome (8202222028).

The spelling of 7201021001 in words is "seven billion, two hundred one million, twenty-one thousand, one".