211221122103 has 6 divisors (see below), whose sum is σ = 305097176384. Its totient is φ = 140814081396.

The previous prime is 211221122083. The next prime is 211221122107. The reversal of 211221122103 is 301221122112.

It is not a de Polignac number, because 211221122103 - 2⁹ = 211221121591 is a prime.

It is a super-2 number, since 2×211221122103² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221122107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11734506775 + ... + 11734506792.

Almost surely, 2^211221122103 is an apocalyptic number.

211221122103 is a deficient number, since it is larger than the sum of its proper divisors (93876054281).

211221122103 is a wasteful number, since it uses less digits than its factorization.

211221122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23469013573 (or 23469013570 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211221122103 its reverse (301221122112), we get a palindrome (512442244215).

Subtracting 211221122103 from its reverse (301221122112), we obtain a palindrome (90000000009).

The spelling of 211221122103 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred three".