211230123103 has 4 divisors (see below), whose sum is σ = 223655424480. Its totient is φ = 198804821728.

The previous prime is 211230123089. The next prime is 211230123107. The reversal of 211230123103 is 301321032112.

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 211230123103 - 2³⁷ = 73791169631 is a prime.

It is a super-2 number, since 2×211230123103² (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 (211230123107) 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, 6212650663 + ... + 6212650696.

It is an arithmetic number, because the mean of its divisors is an integer number (55913856120).

Almost surely, 2^211230123103 is an apocalyptic number.

211230123103 is a deficient number, since it is larger than the sum of its proper divisors (12425301377).

211230123103 is a wasteful number, since it uses less digits than its factorization.

211230123103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425301376.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211230123103 its reverse (301321032112), we get a palindrome (512551155215).

Subtracting 211230123103 from its reverse (301321032112), we obtain a palindrome (90090909009).

The spelling of 211230123103 in words is "two hundred eleven billion, two hundred thirty million, one hundred twenty-three thousand, one hundred three".