221211122222011 has 8 divisors (see below), whose sum is σ = 226461623570784. Its totient is φ = 216020626603200.

The previous prime is 221211122221979. The next prime is 221211122222017. The reversal of 221211122222011 is 110222221112122.

221211122222011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221211122222011 - 2⁵ = 221211122221979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221211122222017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15001425031 + ... + 15001439776.

It is an arithmetic number, because the mean of its divisors is an integer number (28307702946348).

Almost surely, 2^{221211122222011} is an apocalyptic number.

221211122222011 is a deficient number, since it is larger than the sum of its proper divisors (5250501348773).

221211122222011 is a wasteful number, since it uses less digits than its factorization.

221211122222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30002864981.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221211122222011 its reverse (110222221112122), we get a palindrome (331433343334133).

The spelling of 221211122222011 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, eleven".