221012010211 has 16 divisors (see below), whose sum is σ = 234557005824. Its totient is φ = 207527914624.

The previous prime is 221012010209. The next prime is 221012010217. The reversal of 221012010211 is 112010210122.

It is a cyclic number.

It is not a de Polignac number, because 221012010211 - 2¹ = 221012010209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221012010191 and 221012010200.

It is not an unprimeable number, because it can be changed into a prime (221012010217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21117966 + ... + 21128428.

It is an arithmetic number, because the mean of its divisors is an integer number (14659812864).

Almost surely, 2^221012010211 is an apocalyptic number.

221012010211 is a deficient number, since it is larger than the sum of its proper divisors (13544995613).

221012010211 is a wasteful number, since it uses less digits than its factorization.

221012010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13250.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221012010211 its reverse (112010210122), we get a palindrome (333022220333).

The spelling of 221012010211 in words is "two hundred twenty-one billion, twelve million, ten thousand, two hundred eleven".