101222221211 has 4 divisors (see below), whose sum is σ = 101399493624. Its totient is φ = 101044948800.

The previous prime is 101222221201. The next prime is 101222221249. The reversal of 101222221211 is 112122222101.

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 101222221211 - 2²² = 101218026907 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 101222221211.

It is not an unprimeable number, because it can be changed into a prime (101222221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88635350 + ... + 88636491.

It is an arithmetic number, because the mean of its divisors is an integer number (25349873406).

Almost surely, 2^101222221211 is an apocalyptic number.

101222221211 is a deficient number, since it is larger than the sum of its proper divisors (177272413).

101222221211 is an equidigital number, since it uses as much as digits as its factorization.

101222221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177272412.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101222221211 its reverse (112122222101), we get a palindrome (213344443312).

The spelling of 101222221211 in words is "one hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".