221132011 has 4 divisors (see below), whose sum is σ = 221197312. Its totient is φ = 221066712.

The previous prime is 221131997. The next prime is 221132029. The reversal of 221132011 is 110231122.

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 221132011 - 2⁵ = 221131979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221131982 and 221132000.

It is not an unprimeable number, because it can be changed into a prime (221132071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27276 + ... + 34441.

It is an arithmetic number, because the mean of its divisors is an integer number (55299328).

Almost surely, 2^221132011 is an apocalyptic number.

221132011 is a deficient number, since it is larger than the sum of its proper divisors (65301).

221132011 is an equidigital number, since it uses as much as digits as its factorization.

221132011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65300.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221132011 is about 14870.5080948836. The cubic root of 221132011 is about 604.7147173985.

Adding to 221132011 its reverse (110231122), we get a palindrome (331363133).

The spelling of 221132011 in words is "two hundred twenty-one million, one hundred thirty-two thousand, eleven".