2421221203 has 4 divisors (see below), whose sum is σ = 2428957048. Its totient is φ = 2413485360.

The previous prime is 2421221177. The next prime is 2421221219. The reversal of 2421221203 is 3021221242.

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 2421221203 - 2²¹ = 2419124051 is a prime.

It is a super-2 number, since 2×2421221203² = 11724624227713534418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421221263) 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, 3867453 + ... + 3868078.

It is an arithmetic number, because the mean of its divisors is an integer number (607239262).

Almost surely, 2^2421221203 is an apocalyptic number.

2421221203 is a deficient number, since it is larger than the sum of its proper divisors (7735845).

2421221203 is an equidigital number, since it uses as much as digits as its factorization.

2421221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735844.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2421221203 is about 49205.9061800512. The cubic root of 2421221203 is about 1342.8004851330.

Adding to 2421221203 its reverse (3021221242), we get a palindrome (5442442445).

The spelling of 2421221203 in words is "two billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred three".