221022011211 has 8 divisors (see below), whose sum is σ = 297450183744. Its totient is φ = 145970923080.

The previous prime is 221022011149. The next prime is 221022011233. The reversal of 221022011211 is 112110220122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221022011211 - 2³⁴ = 203842142027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221022011251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344270725 + ... + 344271366.

It is an arithmetic number, because the mean of its divisors is an integer number (37181272968).

Almost surely, 2^221022011211 is an apocalyptic number.

221022011211 is a deficient number, since it is larger than the sum of its proper divisors (76428172533).

221022011211 is a wasteful number, since it uses less digits than its factorization.

221022011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688542201.

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

Adding to 221022011211 its reverse (112110220122), we get a palindrome (333132231333).

The spelling of 221022011211 in words is "two hundred twenty-one billion, twenty-two million, eleven thousand, two hundred eleven".