211920103 has 8 divisors (see below), whose sum is σ = 217901376. Its totient is φ = 205977600.

The previous prime is 211920101. The next prime is 211920109. The reversal of 211920103 is 301029112.

211920103 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 211920103 - 2¹ = 211920101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211920101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575 + ... + 20647.

It is an arithmetic number, because the mean of its divisors is an integer number (27237672).

Almost surely, 2^211920103 is an apocalyptic number.

211920103 is a deficient number, since it is larger than the sum of its proper divisors (5981273).

211920103 is a wasteful number, since it uses less digits than its factorization.

211920103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19385.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 211920103 is about 14557.4758457639. The cubic root of 211920103 is about 596.1982800109.

Adding to 211920103 its reverse (301029112), we get a palindrome (512949215).

It can be divided in two parts, 2119 and 20103, that added together give a palindrome (22222).

The spelling of 211920103 in words is "two hundred eleven million, nine hundred twenty thousand, one hundred three".