7621221201211 has 8 divisors (see below), whose sum is σ = 8072047754064. Its totient is φ = 7170674584320.

The previous prime is 7621221201157. The next prime is 7621221201227. The reversal of 7621221201211 is 1121021221267.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7621221201211 - 2¹⁵ = 7621221168443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7621221201211.

It is not an unprimeable number, because it can be changed into a prime (7621221201311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69927930 + ... + 70036831.

It is an arithmetic number, because the mean of its divisors is an integer number (1009005969258).

Almost surely, 2^{7621221201211} is an apocalyptic number.

7621221201211 is a deficient number, since it is larger than the sum of its proper divisors (450826552853).

7621221201211 is a wasteful number, since it uses less digits than its factorization.

7621221201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139967981.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 7621221201211 its reverse (1121021221267), we get a palindrome (8742242422478).

The spelling of 7621221201211 in words is "seven trillion, six hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, two hundred eleven".