2103211122421 has 4 divisors (see below), whose sum is σ = 2110972049344. Its totient is φ = 2095450195500.

The previous prime is 2103211122409. The next prime is 2103211122499. The reversal of 2103211122421 is 1242211123012.

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 a cyclic number.

It is not a de Polignac number, because 2103211122421 - 2⁷ = 2103211122293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103211122392 and 2103211122401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103211123421) 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, 3880463055 + ... + 3880463596.

It is an arithmetic number, because the mean of its divisors is an integer number (527743012336).

Almost surely, 2^{2103211122421} is an apocalyptic number.

It is an amenable number.

2103211122421 is a deficient number, since it is larger than the sum of its proper divisors (7760926923).

2103211122421 is an equidigital number, since it uses as much as digits as its factorization.

2103211122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760926922.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 2103211122421 its reverse (1242211123012), we get a palindrome (3345422245433).

The spelling of 2103211122421 in words is "two trillion, one hundred three billion, two hundred eleven million, one hundred twenty-two thousand, four hundred twenty-one".