221102201011 has 4 divisors (see below), whose sum is σ = 221127797224. Its totient is φ = 221076604800.

The previous prime is 221102201009. The next prime is 221102201027. The reversal of 221102201011 is 110102201122.

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 221102201011 - 2¹ = 221102201009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221102200982 and 221102201000.

It is not an unprimeable number, because it can be changed into a prime (221102205011) 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, 12785145 + ... + 12802426.

It is an arithmetic number, because the mean of its divisors is an integer number (55281949306).

Almost surely, 2^221102201011 is an apocalyptic number.

221102201011 is a deficient number, since it is larger than the sum of its proper divisors (25596213).

221102201011 is an equidigital number, since it uses as much as digits as its factorization.

221102201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25596212.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221102201011 its reverse (110102201122), we get a palindrome (331204402133).

The spelling of 221102201011 in words is "two hundred twenty-one billion, one hundred two million, two hundred one thousand, eleven".