221122022211 has 48 divisors (see below), whose sum is σ = 338850570240. Its totient is φ = 138562332480.

The previous prime is 221122022201. The next prime is 221122022213. The reversal of 221122022211 is 112220221122.

It is a happy number.

221122022211 is a `hidden beast` number, since 2 + 211 + 220 + 22 + 211 = 666.

It is not a de Polignac number, because 221122022211 - 2¹³ = 221122014019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221122022213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13703230 + ... + 13719356.

It is an arithmetic number, because the mean of its divisors is an integer number (7059386880).

Almost surely, 2^221122022211 is an apocalyptic number.

221122022211 is a deficient number, since it is larger than the sum of its proper divisors (117728548029).

221122022211 is a wasteful number, since it uses less digits than its factorization.

221122022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16776 (or 16773 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221122022211 its reverse (112220221122), we get a palindrome (333342243333).

The spelling of 221122022211 in words is "two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, two hundred eleven".