221313432011 has 32 divisors (see below), whose sum is σ = 268790184960. Its totient is φ = 177995252736.

The previous prime is 221313431987. The next prime is 221313432017. The reversal of 221313432011 is 110234313122.

It is not a de Polignac number, because 221313432011 - 2¹⁴ = 221313415627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221313432017) 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 31 ways as a sum of consecutive naturals, for example, 24898610 + ... + 24907496.

It is an arithmetic number, because the mean of its divisors is an integer number (8399693280).

Almost surely, 2^221313432011 is an apocalyptic number.

221313432011 is a deficient number, since it is larger than the sum of its proper divisors (47476752949).

221313432011 is a wasteful number, since it uses less digits than its factorization.

221313432011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 221313432011 its reverse (110234313122), we get a palindrome (331547745133).

The spelling of 221313432011 in words is "two hundred twenty-one billion, three hundred thirteen million, four hundred thirty-two thousand, eleven".