7211020001 has 4 divisors (see below), whose sum is σ = 7238438592. Its totient is φ = 7183601412.

The previous prime is 7211019989. The next prime is 7211020013. The reversal of 7211020001 is 1000201127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (7211019989) and next prime (7211020013).

It is a cyclic number.

It is not a de Polignac number, because 7211020001 - 2²² = 7206825697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7211020031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13708901 + ... + 13709426.

It is an arithmetic number, because the mean of its divisors is an integer number (1809609648).

Almost surely, 2^7211020001 is an apocalyptic number.

It is an amenable number.

7211020001 is a deficient number, since it is larger than the sum of its proper divisors (27418591).

7211020001 is a wasteful number, since it uses less digits than its factorization.

7211020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27418590.

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

The square root of 7211020001 is about 84917.7248929810. The cubic root of 7211020001 is about 1931.9634238761.

Adding to 7211020001 its reverse (1000201127), we get a palindrome (8211221128).

The spelling of 7211020001 in words is "seven billion, two hundred eleven million, twenty thousand, one".