211010003123 has 4 divisors (see below), whose sum is σ = 211915625688. Its totient is φ = 210104380560.

The previous prime is 211010003101. The next prime is 211010003131. The reversal of 211010003123 is 321300010112.

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 211010003123 - 2³² = 206715035827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211010003098 and 211010003107.

It is not an unprimeable number, because it can be changed into a prime (211010003143) 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, 452810933 + ... + 452811398.

It is an arithmetic number, because the mean of its divisors is an integer number (52978906422).

Almost surely, 2^211010003123 is an apocalyptic number.

211010003123 is a deficient number, since it is larger than the sum of its proper divisors (905622565).

211010003123 is an equidigital number, since it uses as much as digits as its factorization.

211010003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905622564.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 211010003123 its reverse (321300010112), we get a palindrome (532310013235).

The spelling of 211010003123 in words is "two hundred eleven billion, ten million, three thousand, one hundred twenty-three".