2103420621 has 8 divisors (see below), whose sum is σ = 2807507520. Its totient is φ = 1400807072.

The previous prime is 2103420617. The next prime is 2103420629. The reversal of 2103420621 is 1260243012.

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 2103420621 - 2² = 2103420617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103420629) 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, 365001 + ... + 370718.

It is an arithmetic number, because the mean of its divisors is an integer number (350938440).

Almost surely, 2^2103420621 is an apocalyptic number.

It is an amenable number.

2103420621 is a deficient number, since it is larger than the sum of its proper divisors (704086899).

2103420621 is an equidigital number, since it uses as much as digits as its factorization.

2103420621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736675.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2103420621 is about 45863.0637986605. The cubic root of 2103420621 is about 1281.2740855881.

Adding to 2103420621 its reverse (1260243012), we get a palindrome (3363663633).

The spelling of 2103420621 in words is "two billion, one hundred three million, four hundred twenty thousand, six hundred twenty-one".