221110322011 has 4 divisors (see below), whose sum is σ = 232747707400. Its totient is φ = 209472936624.

The previous prime is 221110321979. The next prime is 221110322021. The reversal of 221110322011 is 110223011122.

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 221110322011 - 2⁵ = 221110321979 is a prime.

It is a super-2 number, since 2×221110322011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221110322021) 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 3 ways as a sum of consecutive naturals, for example, 5818692666 + ... + 5818692703.

It is an arithmetic number, because the mean of its divisors is an integer number (58186926850).

Almost surely, 2^221110322011 is an apocalyptic number.

221110322011 is a deficient number, since it is larger than the sum of its proper divisors (11637385389).

221110322011 is a wasteful number, since it uses less digits than its factorization.

221110322011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11637385388.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221110322011 its reverse (110223011122), we get a palindrome (331333333133).

The spelling of 221110322011 in words is "two hundred twenty-one billion, one hundred ten million, three hundred twenty-two thousand, eleven".