221121201000211 has 4 divisors (see below), whose sum is σ = 221121265532632. Its totient is φ = 221121136467792.

The previous prime is 221121201000061. The next prime is 221121201000299. The reversal of 221121201000211 is 112000102121122.

221121201000211 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.

It is a cyclic number.

It is not a de Polignac number, because 221121201000211 - 2¹¹ = 221121200998163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221121201000311) 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, 26820021 + ... + 34081606.

It is an arithmetic number, because the mean of its divisors is an integer number (55280316383158).

Almost surely, 2^{221121201000211} is an apocalyptic number.

221121201000211 is a deficient number, since it is larger than the sum of its proper divisors (64532421).

221121201000211 is an equidigital number, since it uses as much as digits as its factorization.

221121201000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64532420.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221121201000211 its reverse (112000102121122), we get a palindrome (333121303121333).

The spelling of 221121201000211 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred one million, two hundred eleven", and thus it is an aban number.