221332012011 has 48 divisors (see below), whose sum is σ = 364004110080. Its totient is φ = 128282045760.

The previous prime is 221332011991. The next prime is 221332012043. The reversal of 221332012011 is 110210233122.

221332012011 is a `hidden beast` number, since 2 + 213 + 320 + 120 + 11 = 666.

It is not a de Polignac number, because 221332012011 - 2¹³ = 221332003819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221332012061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19095960 + ... + 19107546.

It is an arithmetic number, because the mean of its divisors is an integer number (7583418960).

Almost surely, 2^221332012011 is an apocalyptic number.

221332012011 is a deficient number, since it is larger than the sum of its proper divisors (142672098069).

221332012011 is a wasteful number, since it uses less digits than its factorization.

221332012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20016 (or 20013 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221332012011 its reverse (110210233122), we get a palindrome (331542245133).

The spelling of 221332012011 in words is "two hundred twenty-one billion, three hundred thirty-two million, twelve thousand, eleven".