10211220200221 has 4 divisors (see below), whose sum is σ = 10211585136192. Its totient is φ = 10210855264252.

The previous prime is 10211220200219. The next prime is 10211220200227. The reversal of 10211220200221 is 12200202211201.

It is a happy number.

10211220200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10211220200221 - 2¹ = 10211220200219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211220200195 and 10211220200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211220200227) 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, 182426011 + ... + 182481976.

It is an arithmetic number, because the mean of its divisors is an integer number (2552896284048).

Almost surely, 2^{10211220200221} is an apocalyptic number.

It is an amenable number.

10211220200221 is a deficient number, since it is larger than the sum of its proper divisors (364935971).

10211220200221 is an equidigital number, since it uses as much as digits as its factorization.

10211220200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364935970.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10211220200221 its reverse (12200202211201), we get a palindrome (22411422411422).

The spelling of 10211220200221 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".