2103343041421 has 4 divisors (see below), whose sum is σ = 2103365669692. Its totient is φ = 2103320413152.

The previous prime is 2103343041413. The next prime is 2103343041491. The reversal of 2103343041421 is 1241403433012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1405199238921 + 698143802500 = 1185411^2 + 835550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103343041421 - 2³ = 2103343041413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103343041421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103343041491) 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, 11174130 + ... + 11360803.

It is an arithmetic number, because the mean of its divisors is an integer number (525841417423).

Almost surely, 2^{2103343041421} is an apocalyptic number.

It is an amenable number.

2103343041421 is a deficient number, since it is larger than the sum of its proper divisors (22628271).

2103343041421 is an equidigital number, since it uses as much as digits as its factorization.

2103343041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22628270.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2103343041421 its reverse (1241403433012), we get a palindrome (3344746474433).

The spelling of 2103343041421 in words is "two trillion, one hundred three billion, three hundred forty-three million, forty-one thousand, four hundred twenty-one".