221103201311 has 4 divisors (see below), whose sum is σ = 221164232592. Its totient is φ = 221042170032.

The previous prime is 221103201269. The next prime is 221103201349. The reversal of 221103201311 is 113102301122.

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 221103201311 - 2⁶ = 221103201247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221103201311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221105201311) 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, 30510206 + ... + 30517451.

It is an arithmetic number, because the mean of its divisors is an integer number (55291058148).

Almost surely, 2^221103201311 is an apocalyptic number.

221103201311 is a deficient number, since it is larger than the sum of its proper divisors (61031281).

221103201311 is an equidigital number, since it uses as much as digits as its factorization.

221103201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61031280.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 221103201311 its reverse (113102301122), we get a palindrome (334205502433).

The spelling of 221103201311 in words is "two hundred twenty-one billion, one hundred three million, two hundred one thousand, three hundred eleven".