221322132011 has 8 divisors (see below), whose sum is σ = 222227496000. Its totient is φ = 220418460360.

The previous prime is 221322131887. The next prime is 221322132019. The reversal of 221322132011 is 110231223122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221322132011 is a prime.

It is a super-2 number, since 2×221322132011² (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 (221322132019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160661 + ... + 684438.

It is an arithmetic number, because the mean of its divisors is an integer number (27778437000).

Almost surely, 2^221322132011 is an apocalyptic number.

221322132011 is a deficient number, since it is larger than the sum of its proper divisors (905363989).

221322132011 is an equidigital number, since it uses as much as digits as its factorization.

221322132011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846169.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221322132011 its reverse (110231223122), we get a palindrome (331553355133).

The spelling of 221322132011 in words is "two hundred twenty-one billion, three hundred twenty-two million, one hundred thirty-two thousand, eleven".