10221211200221 has 4 divisors (see below), whose sum is σ = 11681384228832. Its totient is φ = 8761038171612.

The previous prime is 10221211200181. The next prime is 10221211200251. The reversal of 10221211200221 is 12200211212201.

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 a cyclic number.

It is not a de Polignac number, because 10221211200221 - 2¹⁸ = 10221210938077 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 10221211200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221211200251) 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, 730086514295 + ... + 730086514308.

It is an arithmetic number, because the mean of its divisors is an integer number (2920346057208).

Almost surely, 2^{10221211200221} is an apocalyptic number.

It is an amenable number.

10221211200221 is a deficient number, since it is larger than the sum of its proper divisors (1460173028611).

10221211200221 is an equidigital number, since it uses as much as digits as its factorization.

10221211200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460173028610.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10221211200221 its reverse (12200211212201), we get a palindrome (22421422412422).

The spelling of 10221211200221 in words is "ten trillion, two hundred twenty-one billion, two hundred eleven million, two hundred thousand, two hundred twenty-one".