221011320011 has 4 divisors (see below), whose sum is σ = 234011985912. Its totient is φ = 208010654112.

The previous prime is 221011319951. The next prime is 221011320037. The reversal of 221011320011 is 110023110122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110023110122 = 2 ⋅55011555061.

It is a cyclic number.

It is not a de Polignac number, because 221011320011 - 2³⁰ = 219937578187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221011320911) 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, 6500332925 + ... + 6500332958.

It is an arithmetic number, because the mean of its divisors is an integer number (58502996478).

Almost surely, 2^221011320011 is an apocalyptic number.

221011320011 is a deficient number, since it is larger than the sum of its proper divisors (13000665901).

221011320011 is a wasteful number, since it uses less digits than its factorization.

221011320011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000665900.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 221011320011 its reverse (110023110122), we get a palindrome (331034430133).

The spelling of 221011320011 in words is "two hundred twenty-one billion, eleven million, three hundred twenty thousand, eleven".