213221203403 has 16 divisors (see below), whose sum is σ = 234544119936. Its totient is φ = 192602603520.

The previous prime is 213221203357. The next prime is 213221203417. The reversal of 213221203403 is 304302122312.

It is a cyclic number.

It is not a de Polignac number, because 213221203403 - 2¹⁰ = 213221202379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213221203453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4670375 + ... + 4715807.

It is an arithmetic number, because the mean of its divisors is an integer number (14659007496).

Almost surely, 2^213221203403 is an apocalyptic number.

213221203403 is a deficient number, since it is larger than the sum of its proper divisors (21322916533).

213221203403 is a wasteful number, since it uses less digits than its factorization.

213221203403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53174.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 213221203403 its reverse (304302122312), we get a palindrome (517523325715).

The spelling of 213221203403 in words is "two hundred thirteen billion, two hundred twenty-one million, two hundred three thousand, four hundred three".