211221011102 has 16 divisors (see below), whose sum is σ = 324740784960. Its totient is φ = 102990307488.

The previous prime is 211221011051. The next prime is 211221011167. The reversal of 211221011102 is 201110122112.

211221011102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211221011102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4029977 + ... + 4082052.

It is an arithmetic number, because the mean of its divisors is an integer number (20296299060).

Almost surely, 2^211221011102 is an apocalyptic number.

211221011102 is a deficient number, since it is larger than the sum of its proper divisors (113519773858).

211221011102 is a wasteful number, since it uses less digits than its factorization.

211221011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8112355.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211221011102 its reverse (201110122112), we get a palindrome (412331133214).

The spelling of 211221011102 in words is "two hundred eleven billion, two hundred twenty-one million, eleven thousand, one hundred two".