221211102111011 has 8 divisors (see below), whose sum is σ = 230481027707904. Its totient is φ = 212074556738760.

The previous prime is 221211102110917. The next prime is 221211102111017. The reversal of 221211102111011 is 110111201112122.

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 221211102111011 - 2¹⁴ = 221211102094627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221211102111017) 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, 33345052775 + ... + 33345059408.

It is an arithmetic number, because the mean of its divisors is an integer number (28810128463488).

Almost surely, 2^{221211102111011} is an apocalyptic number.

221211102111011 is a deficient number, since it is larger than the sum of its proper divisors (9269925596893).

221211102111011 is a wasteful number, since it uses less digits than its factorization.

221211102111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66690112321.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221211102111011 its reverse (110111201112122), we get a palindrome (331322303223133).

The spelling of 221211102111011 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred two million, one hundred eleven thousand, eleven".