211221001102 has 8 divisors (see below), whose sum is σ = 316902189096. Its totient is φ = 105586938072.

The previous prime is 211221001099. The next prime is 211221001109. The reversal of 211221001102 is 201100122112.

211221001102 is digitally balanced in base 3, 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 super-2 number, since 2×211221001102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221001109) 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, 11770033 + ... + 11787964.

It is an arithmetic number, because the mean of its divisors is an integer number (39612773637).

Almost surely, 2^211221001102 is an apocalyptic number.

211221001102 is a deficient number, since it is larger than the sum of its proper divisors (105681187994).

211221001102 is a wasteful number, since it uses less digits than its factorization.

211221001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23562482.

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

Adding to 211221001102 its reverse (201100122112), we get a palindrome (412321123214).

The spelling of 211221001102 in words is "two hundred eleven billion, two hundred twenty-one million, one thousand, one hundred two".