10211210002221 has 4 divisors (see below), whose sum is σ = 13614946669632. Its totient is φ = 6807473334812.

The previous prime is 10211210002219. The next prime is 10211210002237. The reversal of 10211210002221 is 12220001211201.

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 10211210002221 - 2¹ = 10211210002219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211210002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211210002241) 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, 1701868333701 + ... + 1701868333706.

It is an arithmetic number, because the mean of its divisors is an integer number (3403736667408).

Almost surely, 2^{10211210002221} is an apocalyptic number.

It is an amenable number.

10211210002221 is a deficient number, since it is larger than the sum of its proper divisors (3403736667411).

10211210002221 is an equidigital number, since it uses as much as digits as its factorization.

10211210002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403736667410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10211210002221 its reverse (12220001211201), we get a palindrome (22431211213422).

The spelling of 10211210002221 in words is "ten trillion, two hundred eleven billion, two hundred ten million, two thousand, two hundred twenty-one".