3421621203 has 64 divisors (see below), whose sum is σ = 6139564032. Its totient is φ = 1636951680.

The previous prime is 3421621111. The next prime is 3421621237. The reversal of 3421621203 is 3021261243.

It is not a de Polignac number, because 3421621203 - 2¹⁰ = 3421620179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3421621253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1641600 + ... + 1643682.

It is an arithmetic number, because the mean of its divisors is an integer number (95930688).

Almost surely, 2^3421621203 is an apocalyptic number.

3421621203 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3421621203 is a deficient number, since it is larger than the sum of its proper divisors (2717942829).

3421621203 is a wasteful number, since it uses less digits than its factorization.

3421621203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 3421621203 is about 58494.6254197768. The cubic root of 3421621203 is about 1506.8752837245.

Adding to 3421621203 its reverse (3021261243), we get a palindrome (6442882446).

The spelling of 3421621203 in words is "three billion, four hundred twenty-one million, six hundred twenty-one thousand, two hundred three".