211122103203021 has 4 divisors (see below), whose sum is σ = 281496137604032. Its totient is φ = 140748068802012.

The previous prime is 211122103203007. The next prime is 211122103203049. The reversal of 211122103203021 is 120302301221112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211122103203021 - 2¹⁹ = 211122102678733 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 (211122103203091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35187017200501 + ... + 35187017200506.

It is an arithmetic number, because the mean of its divisors is an integer number (70374034401008).

Almost surely, 2^{211122103203021} is an apocalyptic number.

It is an amenable number.

211122103203021 is a deficient number, since it is larger than the sum of its proper divisors (70374034401011).

211122103203021 is an equidigital number, since it uses as much as digits as its factorization.

211122103203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70374034401010.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211122103203021 its reverse (120302301221112), we get a palindrome (331424404424133).

The spelling of 211122103203021 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred three million, two hundred three thousand, twenty-one".